Introduction

The First Alert SCO500B Smoke and Carbon Monoxide Alarm is a state-of-the-art device designed to provide dual protection against smoke and carbon monoxide threats. Launched in 2008, this alarm features advanced photoelectric sensing technology and a voice alert system that indicates the location of detected hazards. Priced at approximately $150, it operates wirelessly, allowing up to 16 interconnected alarms for comprehensive home safety. Manufactured by BRK Brands, Inc., it combines reliability with user-friendly features for enhanced security.

Specifications 

The First Alert Smoke & Carbon Monoxide Alarm SCO500 boasts several key features that make it a top choice for home safety: 

• Dual Sensors: Detects both smoke and carbon monoxide. 
• 10-Year Sealed Battery: No need for frequent battery replacements. 
• Voice Alerts: Provides clear voice warnings for smoke, carbon monoxide, low battery, and other alerts. 
• LED Lights: Includes flashing red LED lights for visual alerts. 
• UL Certified: Meets or exceeds UL standards for smoke and carbon monoxide detection. 
• Easy to install and mount on walls or ceilings.

Key features include

Smoke & Carbon Monoxide Combination Alarm. One alarm protects against two deadly household threats.

WIRELESS INTERCONNECT Enabled
The alarm automatically communicates with other WIRELESS INTERCONNECT enabled alarms when installed.

Exclusive Voice Warning with Location 
Will tell you the preprogrammed location of the initiating unit and danger detected. Programmable up to 11 locations (ex. “basement”). When alarms sounds, if programmed for basement it will say “Warning, evacuate, smoke in basement” along with all other installed WIRELESS INTERCONNECT Voice alarms.

Spread Spectrum Horn Tone
Lower and varying horn frequency makes it easier for elderly with normal age related hearing loss to hear horn. Sweeps through the 2200 – 3400 Hz range.

RF Interconnect
Reliable and secure radio frequency communication between alarms. 915 MHz frequency with 65,000 security codes and 3 channel frequency hopping.

Single Button Test/Silence 
Eliminates confusion. Depending on what mode the alarm is in, pushing the button provides different functions such as testing the alarm, silencing the alarm, re-testing the alarm when in silence and clearing the Latching features.

Two Silence Features
Temporarily silence low battery chirp for up to eight hours before replacing low battery or silence an unwanted alarm for several minutes.

Two Latching Features

• Alarm Latch: Easily identifies initiating alarm even after alarm condition has subsided.
• Low Battery Latch: Identifies which unit is in low battery condition.

Perfect Mount System 
Includes a gasketless base for easy installation and a mounting bracket that keeps the alarm secure over a wide rotation range to allow for perfect alignment.

End-of-Life Signal
Provides audible confirmation alarm needs to be replaced.

Description

The First Alert SCO500 is designed with user convenience and safety in mind. The alarm features a sleek and compact design that makes it easy to install in any room. The 10-year sealed battery eliminates the hassle of frequent replacements, ensuring continuous protection without interruption. The voice alert system provides clear instructions and warnings, making it easier to respond quickly in emergency situations. Additionally, the LED lights offer a visual indicator of alerts, making it suitable for homes with members who may have hearing impairments.

WIRELESS OPERATION

First Alert WIRELESS INTERCONNECT Technology is an easy, cost-effective way to provide your family with whole-home safety. All WIRELESS INTERCONNECT Alarms communicate with each other without wires or connectors. When one Alarm sounds, they all sound. This provides your family with an earlier warning of potential danger and gives you more time to react.

The communication distance (range) between any two WIRELESS INTERCONNECT Alarms is typically 50 feet (15 meters) inside a home. Some features of a home, such as the number of floors, number/ size of rooms, furniture, and types of building materials used may reduce the range of the Alarms.

Examples include 
Suspended ceilings, ductwork, large metallic appliances (refrigerators) and metal studs. A feature of WIRELESS INTERCONNECT Alarms is that they operate as a mesh network. All Alarms will repeat any alarm signal that is received to all other WIRELESS INTERCONNECT Alarms. Interference from structural conditions can be overcome  byadding additional Alarms to route the wireless signal around obstructions.

IMPORTANT

• The range and proper operation of any wireless device will vary depending on its surroundings. It is very important that each Alarm is tested individually before and after installation to make sure that all Alarms respond properly.
• The WIRELESS INTERCONNECT Alarms are not to be used outdoors or to transmit between buildings. The Alarms will not communicate properly under these conditions.
• Metal objects and metallic wallpaper may interfere with signals from wireless Alarms. Alarms should be tested after changes to your home such as remodeling, moving furniture, and with metal doors opened and closed.

Your First Alert WIRELESS INTERCONNECT Smoke/CO Alarm will automatically communicate both potential fires and carbon monoxide presence with all other First Alert WIRELESS INTERCONNECTSmoke/ CO Alarms.

CAUTION!
Changes or modifications not expressly approved by BRK Brands, Inc. could void the user's authority to operate the equipment.

IMPORTANT! PLEASE READ CAREFULLY AND SAVE.

This user's manual contains important information about your Combination Carbon Monoxide & Smoke Alarm's operation. If you are installing this Alarm for use by others, you must leave this manual —or a copy of it — with the end user.

FIRE SAFETY TIPS

Follow safety rules and prevent hazardous situations:

1. Use smoking materials properly. Never smoke in bed.
2. Keep matches or lighters away from children;
3. Store flammable materials in proper containers;
4. Keep electrical appliances in good condition and don't overload electrical circuits;
5. Keep stoves, barbecue grills, fireplaces and chimneys grease- and debris-free;
6. Never leave anything cooking on the stove unattended;
7. Keep portable heaters and open flames, like candles, away from flammable materials;
8. Don't let rubbish accumulate. Keep alarms clean, and test them weekly. Replace alarms immediately if they are not working properly. Smoke Alarms that do not work cannot alert you to a fire. Keep at least one working fire extinguisher on every floor, and an additional one in the kitchen. Have fire escape ladders or other reliable means of escape from an upper floor in case stairs are blocked.

BASIC SAFETY INFORMATION

IMPORTANT!

• Dangers, Warnings, and Cautions alert you to important operating instructions or to potentially hazardous situations. Pay special attention to these items.
• This Smoke/CO Alarm is approved for use in single-family residences.

CAUTION!
This combination Smoke/Carbon Monoxide Alarm has two separate alarms. The CO Alarm is not designed to detect fire or any other gas. It will only indicate the presence of carbon monoxide gas at the sensor. Carbon monoxide gas may be present in other areas. The Smoke Alarm will only indicate the presence of smoke that reaches the sensor.

The Smoke Alarm is not desianed to sense gas. heat or flames.

WARNING:

• This Smoke/CO Alarm cannot operate without working batteries. Removing the batteries for any reason, or failing to replace the batteries at the end of their service life, removes your protection.
• NEVER ignore any alarm. See "If Your Smoke/CO Alarm Sounds" for more information on how to respond to an alarm. Failure to respond can result in injury or death.
• The Silence Features are for your convenience only and will not correct a problem. See "Using the Silence Features" for details ays check you homes potlut or roblem after
• Test this Smoke/CO Alarm once a week. If the Alarm ever fails to test correctly, have it replaced immediately! If the Alarm is not working properly, it cannot alert you to a problem.
• This product is intended for use in ordinary indoor locations of family living units. It is not designed to measure CO levels in compliance with Occupational Safety and Health Administration (OSHA) commercial or industrial standards. Individuals with medical conditions that may make them more sensitive to carbon monoxide may consider using warning devices which provide audible and visual signals for carbon monoxide concentrations under 30 ppm.

STEP-BY-STEP GUIDE TO PROGRAMMING THIS ALARM

FOR FIRST TIME AND WHEN CHANGING BATTERIES

Your Alarm has now been programmed for the location of your choice. Available locations:

• Basement
• Living Room
• Family Room
• Office
• Kitchen
• Dining Room
• No Location
• Hallway
• Child's Bedroom
• Master Bedroom
• Guest Bedroom
• Utility Room

ADDING AND LINKING ADDITIONAL WIRELESS INTERCONNECT ALARMS
Nonore than two rough pass, to be com pote it wil stoutes. blinking. Simply open the battery drawer of the second Alarm and repeat steps 1 through 3.

1. Insert the batteries into the battery drawer of the next Alarm. DO NOT CLOSE THE DRAWER.

2. Press and hold the test button and then close the battery drawer.

   

3. Once you hear the unit chirp, release the test button. The Green power LED will start to blink indicating the WIRELESS INTERCONNECT Alarm is waiting for program data from one of the other setup WIRELESS INTERCONNECT Alarms.
4. Press and hold the test button on the first Alarm, until the second
   Alarm chirps and its Green power LED stops blinking. Then release the test button.
5. If you have purchased the hardwired battery back-up WIRELESS INTERCONNECT Alarm, you can now connect the hardwired Alarm by installing the three-wire connector on the ceiling to the Alarm.
6. Repeat steps 1-5 for additional WIRELESS INTERCONNECT Alarms.
   You have now successfully linked your new WIRELESS INTERCONNECT Alarms. To add additional Alarms at a later time, follow steps 1 through 5.

WHAT YOU WILL SEE AND HEAR WITH THIS ALARM

Under Normal Operations

• Voice: Silent
• Horn: Silent
• Power/Smoke LED: Flashes Green once a minute
• CO LED: Off

When You Test the Alarm

• Voice: "Testing." Horn: 3 beeps, pause, 3 beeps; Voice: "Warning, evacuate smoke in [Location, example: "Basement"). Evacuate.
• Smoke LED: Flashes Red in sync with the horn pattern
• Horn: 4 fast beeps, pause, 4 fast beeps;
• Voice: "Warning, evacuate carbon monoxide in [Location, example: "Basement"]. Evacuate." Pause. "Highest carbon monoxide level was [CO level example: 0 ppm]".
• CO LED: Flashes Red in sync with the horn pattern

If Battery Becomes Low

• Voice: "Replace battery in [Location, example "Kitchen"]." Repeated every 5 hours
• Hower hike LeD: Flashes Green On for 2 seconds/Off for 2 seconds. Low Battery Latch is now engaged.
• CO LED: Off

If Alarm is Not Operating Properly (MALFUNCTION SIGNAL)

Voice: "Danuat refer to focation, ding Cluel chen", please see Repeated every 5 hours
Horn: 3 chirps every minute
Power/Smoke LED: 3 Flashes approximately once a minute
CO LED: Off

Alarm has reached its End of Life

• Voice: "Detector error in [Location, example "Basement"], please see manual." Repeated every 5 hours
• Horn: 5 chirps every minute
• Power/Smoke LED: 5 Flashes approximately once a minute
• COLED: Off

Alarm Levels of CO are Detected

• Voice: "Warning, evacuate carbon monoxide in [Location, example "Kitchen"]. Evacuate. ppm.
• Horn: 4 beeps, pause, 4 beeps, voice*
• Power/Smoke LED: Off
• CO-LED
  • During Alarm: Flashes Red in sync with the horn pattern.
  • After Alarm: Flashes Red On for 2 seconds/Off for 2 seconds. CO Alarm Latch is now engaged.

NOTE: If unit goes into CO alarm, the regular 4 beeps-brief pause cycle will repeat for four minutes. After four minutes, the pause will increase to one minute.

Smoke is Detected

• Voice: "Warning, evacuate smoke in Location, example: "Kitchen". Evacuate."
• Horn: 3 beeps, pause, 3 beeps, voice
• Power/Smoke LED: During Alarm: Flashes Red in sync with the horn pattern. After Alarm: Flashes Red On for 2 seconds/ Off for 2 seconds. Smoke Alarm Latch is now engaged.
• CO LED: Off

Smoke Alarm is Silenced

• Voice: Silent
• Horn: Off
• Power/Smoke LED: Flashes Rec
• CO LED: Off

CO Alarm is Silenced

• Voice: Silent
• Horn: Off
• Power/Smoke LED: Off
• CO LED: Flashes Red

INSTALLATION

WHERE TO INSTALL THIS ALARM
Minimum coverage for Smoke Alarms, as recommended by the National Fire Protection Association (NFPA), is one Smoke Alarm on every floor, in every sleeping area, and in every bedroom (See "Regulatory Information For Smoke Alarms" for details on the NFPA recommendations).

For CO Alarms, the National Fire Protection Association (NFPA) recommends that a CO Alarm should be centrally located outside of each separate sleeping area in the immediate vicinity of the bedrooms.

For added protection, install additional CO Alarms in each separate bedroom, and on every level of your home.

NOTE: For added protection, install an additional Smoke/CO Alarm at least 15 feet (4.6 meters) away from the furnace or fuel burning heat source where possible. In smaller homes or in manufactured homes where this distance cannot be maintained, install the Alarm as far away as possible from the furnace or other fuel burning source. Installing the Alarm closer than 15 feet (4.6 meters) will not harm the Alarm, but may increase the frequency of unwanted alarms.

In general, install combination Smoke and Carbon Monoxide Alarms:

• In thing rea, install ening era, i our his me he than to feet (12 meters) long, install a unit at each end.
• On every level of your home, including finished attics and basements.
• Inside every bedroom, especially if people sleep with the door partly or completely closed.
• At the top of first-to-second floor stairs.

At the bottom of the basement stairs. For additional coverage, install Alarms in all rooms, halls, and storage areas, where temperatures normally remain between 40° F and 100° F (4.4" C and 37.8° C).

Recommended Placement

• When installing on the wall, the top edge of Smoke Alarms should be placed between 4 inches (102 mm) and 12 inches (305 mm) from the wall/ceiling line.
• When installing on the ceiling, place the Alarm as close to the center as possible.
• In either case, install at least 4 inches (102 mm) from where the wall and ceiling meet. See "Avoiding Dead Air Spaces" for more information.

NOTE: For any location, make sure no door or other obstruction could keep carbon monoxide or smoke from reaching the Alarm.

WHERE THIS ALARM SHOULD NOT BE INSTALLED
Do NOT locate this Smoke/CO Alarm:

• In garages, furnace rooms, crawl spaces and unfinished attics. Avoid extremely dusty, dirty or greasy areas.
• Where combustion particles are produced. Combustion particles form when something burns. Areas to avoid include poorly ventilated kitchens, garages, and furnace rooms. Keep units at least 20 feet (6 meters) from the sources of combustion particles (stove, furnace, water heater, space heater) if possible.
• In areas where a 20-foot (6 meter) distance is not possible - in modular, mobile, or smaller homes, for example - it is recommended the Smoke Alarm be placed as far from these fuel-burning sources as possible. The placement recommendations are intended to keep these Alarms at a reasonable distance from a fuel-burning source, and thus reduce "unwanted" alarms. Unwanted alarms can occur if a Smoke Alarm is placed directly next to a fuel-burning source.
• Ventilate these areas as much as possible.
• Within 5 feet (1.5 meters) of any cooking appliance. In air streams near kitchens. Air currents can draw cooking smoke into the smoke sensor and cause unwanted alarms.
• In extremely humid areas. This Alarm should be at least 10 feet (3 meters) from a shower, sauna, humidifier, vaporizer, dishwasher, laundry room, utility room, or other source of high humidity.
• In direct sunlight.
• In turbulent air, like near ceiling fans or open windows. Blowing air may prevent CO or smoke from reaching the sensors.
• In areas where temperature is colder than 40° F (4.4° C) or hotter than 100° F (37.8° C). These areas include non-airconditioned crawl spaces, unfinished attics, uninsulated or poorly insulated ceilings, porches, and garages.
• In insect infested areas. Insects can clog the openings to the sensing chamber.
• Less than 12 inches (305 mm) away from fluorescent lights. Electrical "noise" can interfere with the sensor.
• In "dead air" spaces. See "Avoiding Dead Air Spaces".

AVOIDING DEAD AIR SPACES
"Dead air" spaces may prevent smoke from reaching the Smoke/CO Alarm. To avoid dead air spaces, follow installation recommendations below.

On ceilings, install Smoke/CO Alarms as close to the center of the ceiling as possible. If this is not possible, install the Smoke/CO Alarm at least 4 inches (102 mm) from the wall or corner.

For wall mounting (if allowed by building codes), the top edge of Smoke/CO Alarms should be placed between 4 inches (102 mm) and 12 inches (305 mm) from the wall/ceiling line, below typical "dead air" spaces.

Alarm waked, get , meter of ale ping inste fist g, measured horizontally. Additional Smoke/CO Alarms may be required depending on the length, angle, etc. of the ceiling's slope. Refer to NFPA 72 for details on requirements for sloped or peaked ceilings.

HOW TO INSTALL THIS ALARM

For quick installation instructions see the "Quick and Easy Guide to Programming Your WIRELESS INTERCONNECT Alarm and Using the Optional Features".

IMPORTANT!
This combination Smoke/CO Alarm was designed to be mounted on the ceiling or wall. It is not a tabletop device. You must install this device on the ceiling or wall as outlined below. Read "Where To Install This Alarm" before starting.

PARTS OF THIS SMOKE/CO ALARM

1. Test/Silence Button
2. Battery Compartment
3. Power/Smoke Alarm LED
4. CO Alarm LED

Tools you will need: pencil, drill with 3/16" or 5mm drill bit, Phillips screwdriver, hammer.

CAUTION!
Do not install this unit over an electrical junction box. Air currents around junction boxes can prevent smoke from reaching the sensing chamber and prevent the unit from alarming. Only AC powered units are intended for installation over junction boxes.

IMPORTANT!
If you want to lock the battery compartment, or lock the Smoke/CO Alarm to the mounting bracket, please read the "Optional Locking Features" section in the "Quick and Easy Guide to Programming Your WIRELESS INTERCONNECT Alarm and Using the Optional Features" attachment before you begin installation.

1. Hold the mounting bracket against the ceiling (or wall) so the vertical mounting slot is aligned in the 12 o'clock position and trace around the inside of the mounting slots (vertical and horizontal mounting).
2. Put the unit where it won't get covered with dust when you drill the mounting holes.
3. Using a 3/16" (5 mm) drill bit, drill a hole through the center of the oval outlines you traced.
4. Insert the plastic screw anchors (in the plastic bag with screws) into the holes. Tap the screw anchors gently with a hammer, if necessary, until they are flush with the ceiling or wall.
5. Line the mounting bracket up over the plastic screw anchors.
6. Screw the mounting bracket to the ceiling or wall through the mounting slots using the two screws provided.
7. Attach the Smoke/CO Alarm to the mounting bracket. Line up the guides on the alarm's base with the guides on the mounting bracket. When guides are lined up, turn the base clockwise (right) until it snaps into place. 
   NOTE: Once the Alarm is snapped onto the mounting bracket, you can rotate the Alarm to adjust the alignment.

8. Test the Smoke/CO Alarm. See "Weekly Testing" for details.

   

OPTIONAL LOCKING FEATURES

The optional locking features are designed to prevent unauthorized removal of the batteries or alarm. It is not necessary to activate the locks in single-family households where unauthorized battery or Alarm removal is not a concern. These Alarms have two separate locking features: one to lock the battery compartment, and the other to lock the

Alarm to the mounting bracket. You can choose to use either feature independently, or use them both.

Tools you will need:

• Needle-nose pliers
• Standard flathead screwdriver.

Both locking features use locking pins, which are molded into the mounting bracket. Depending on which locking features you use, remove one or both pins from the mounting bracket using needle-nose pliers.

IMPORTANT!
To permanently remove either locking pin, insert a flathead screwdriver between the locking pin and the lock, and pry the pin out of the lock.

TO LOCK THE BATTERY COMPARTMENT
Do not lock the battery compartment until you install the batteries and test the Alarm.

IMPORTANT!
If the unit does not alarm during testing, DO NOT lock the battery compartment! Install new batteries and test again. If the Alarm still does not alarm, replace it immediately.

1. Using needle-nose pliers, detach one locking pin from the mounting bracket.

2. After batteries are inserted, then push the locking pin through the hole near the battery door latch on the back of the Alarm.

   

TO UNLOCK THE BATTERY COMPARTMENT

1. Remove the Alarm from the mounting bracket. If the unit is locked to the bracket, see the section "To Unlock the Mounting Bracket."
2. Insert a flathead screwdriver under the head of the locking pin, and gently pry it out of the battery compartment lock. (If you plan to relock the battery compartment, save the locking pin.)
3. To relock the battery compartment, close the battery door and reinsert locking pin in lock.

4. Reattach the Alarm to the mounting bracket.

   

IMPORTANT!
When replacing the batteries, always test the Alarm before relocking the battery compartment.

TO LOCK THE MOUNTING BRACKET

1. Using needle-nose pliers, detach one locking pin from the mounting bracket.
2. Insert the locking pin through the hole on the back of the Alarm as shown in the diagram.

3. When you attach the Alarm to the mounting bracket, the locking pin's head will fit into a notch on the bracket.

   

TO UNLOCK THE MOUNTING BRACKET

1. Insert a flathead screwdriver into the rectangular cut-out the mounting bracket nearest the locking pin.

2. Pry the Alarm away from the bracket pushing up on the screwdriver and turning the Alarm counterclockwise (le the same time.

   

IF YOUR SMOKE/CO ALARM SOUNDS

WHAT TO DO FIRST-IDENTIFY THE TYPE OF

ALARM SIGNAL
Refer to previous section "What You Will See and Hear With This Alarm".

IF THE CO ALARM SOUNDS

"ALARM-MOVE TO FRESH AIR"
If you hear the CO alarm horn and the CO red light is flashing, move everyone to a source of fresh air. DO NOT remove the batteries!

WARNING!
Actuation of your CO Alarm indicates the presence of carbon monoxide (CO) which can kill you. In other words, when your CO Alarm sounds, you must not ignore it!

IF THE CO ALARM SIGNAL SOUNDS:

1. Operate the Test/Silence button.
2. Call your emergency services, fire department or 911. Write down the number of your local emergency service here:
3. Immediately move to fresh air-outdoors or by an open door or window. Do a head count to check that all persons are accounted for. Do not re-enter the premises, or move away from the open door or window until the emergency services responder has arrived, the premises have been aired out, and your CO Alarm remains in its normal condition.
4. After following steps 1-3, if your CO Alarm reactivates within a 24-hour period, repeat steps 1-3 and call a qualified appliance technician to investigate for sources of CO from fuel-burning equipment and appliances, and inspect for proper operation of this equipment. If problems are identified during this inspection have the equipment serviced immediately. Note any combustion equipment not inspected by the technician, and consult the manufacturers' instructions, or contact the manufacturers directly, for more information about CO safety and this equipment. Make sure that motor vehicles are not, and have not, been operating in an attached garage or adjacent to the residence. Write down the number of a qualified appliance technician here:

AFTER AN ALARM
After the emergency responders arrive, the premises aired out, and your CO Alarm remains in its normal condition, you can check what the highest carbon monoxide level sensed was:

Action:

1. Press & Hold Test Button
   Alarm Will Say:
2. Proud like to Treat Bue highest level sensed.
   If you would like to keep the highest level in memory, do not press anything.
   "Highest carbon monoxide level was ppm. Please see manual."
   "To clear highest carbon monoxide now, press and hold test button
   "Highest carbon monoxide level cleared." Alarm will say nothing.

IF THE SMOKE ALARM SOUNDS

RESPONDING TO AN ALARM

WARNING

If the unit alarms and you are not testing the unit, it is warning you of a potentially dangerous situation that requires your immediate attention. NEVER ignore any alarm. Ignoring the alarm may result in injury or death.

• Never remove the batteries from a battery operated Smoke/CO Alarm to stop an unwanted alarm (caused by cooking smoke, etc.). Removing batteries disables the alarm so it cannot sense smoke, and removes your protection. Instead open a window or fan the smoke away from the unit. The alarm will reset automatically.
• If the unit alarms get everyone out of the house immediately.

WHAT TO DO IN CASE OF FIRE

Don’t panic; stay calm. Follow your family escape plan.

• Get out of the house as quickly as possible. Don’t stop to get dressed or collect anything.
• Feel doors with the back of your hand before opening them. If a door is cool, open it slowly. Don’t open a hot door. Keep doors and windows closed, unless you must escape through them.
• Cover your nose and mouth with a cloth (preferably damp). Take short, shallow breaths.
• Meet at your planned meeting place outside your home, and do a head count to make sure everybody got out safely.
• Call the Fire Department as soon as possible from outside. Give your address, then your name.
• Never go back inside a burning building for any reason.
• Contact your Fire Department for ideas on making your home safer.

WARNING
Alarms have various limitations. See “General Limitations of Smoke/CO Alarms” for details.

USING THE SILENCE FEATURES

Never remove the batteries to quiet an unwanted alarm. Removing the batteries disables the alarm and removes your protection.

The Silence Feature is intended to temporarily silence the horn while you identify and correct the problem. Do not use the Silence Feature in emergency situations. It will not correct a CO problem or extinguish a fire.

The Silence Feature can temporarily quiet an unwanted alarm for several minutes. You can silence this Smoke/CO Alarm by pressing the Test/ Silence button on the alarm cover for at least 3-5 seconds. After the Test/Silence button is released, the Red LED blinks during the silence mode.

When the Smoke Alarm is Silenced

• The Smoke Alarm will remain silent for up to 15 minutes, then return to normal operation.
• If the smoke has not cleared–or continues to increase–the device will go back into alarm.

When the CO Alarm is Silenced

• The CO Alarm will remain silent for up to 4 minutes.
• After 4 minutes, if CO levels remain potentially dangerous the horn will start sounding again.

SILENCING THE LOW BATTERY WARNING

• This silence feature can temporarily quiet the low battery warning “chirp” for up to 8 hours. You can silence the low battery warning “chirp” by pressing the Test/Silence button on the alarm cover.
• Once the low battery warning “chirp” silence feature is activated, the unit continues to flash the Greenlight twice a minute for 8 hours. After 8 hours, the low battery “chirp” will resume. Replace the batteries as soon as possible; this unit will not operate without battery power!

To deactivate this feature

• Press the Test/Silence button again.
• The unit will go into Test Mode and the low battery warning will resume (LED flashes and unit sounds “chirp” once a minute).

SILENCING THE END OF LIFE SIGNAL

This silence feature can temporarily quiet the End of Life warning “chirp” for up to 2 days. You can silence the End of Life warning “chirp” by pressing the Test/Silence button. The horn will chirp, acknowledging that the End of Life silence feature has been activated. After approximately 2 days, the End of Life “chirp” will resume.

LATCHING FEATURES

Alarm Latch is activated after an Alarm is exposed to alarm levels of smoke or carbon monoxide. After smoke or CO levels drop below alarm levels, the “Smoke/Power” LED and/or the “CO” Red LED will begin to flash On for 2 seconds/Off for 2 seconds. It will continue to flash or “latch” for about 15 minutes, to give you time to determine which unit initiated the alarm.

Low Battery Latch is activated when the Alarm is in the “low battery condition”. When this occurs, the Smoke/Power LED flashes Green On for 2 seconds/Off for 2 seconds for about 15 minutes. This feature is designed to help you identify which Alarm needs to have the battery replaced. Although, the Alarm will sound the low battery chirp approximately once every minute, sometimes during the initial stages of “low battery”, the Alarm will chirp in greater intervals than one minute, sometimes up to several hours, until the battery reaches a steady low battery level.

This innovative feature eliminates the frustration of waiting for and/or identifying which unit is chirping.

WEEKLY TESTING

WARNING

• NEVER use an open flame of any kind to test this unit. You might accidentally damage or set fire to the unit or to your home. The built-in test switch accurately tests the unit’s operation as required by Underwriters Laboratories, Inc. (UL).
• NEVER use vehicle exhaust! Exhaust may cause permanent damage and voids your warranty.
• DO NOT stand close to the Alarm when the horn is sounding. Exposure at close range may be harmful to your hearing. When testing, step away when horn starts sounding.

CAUTION
It is important to test this unit every week to make sure it is working properly. Using the test button is the recommended way to test this Smoke/CO Alarm. You can test this Smoke/CO Alarm by pressing and holding the Test/ Silence button on the Alarm cover until Alarm Voice says “Testing” (typically 3-5 seconds).

During testing, you will see and hear the following sequence:

• The Alarm Voice will say “Testing.” The Horn will sound 3 beeps, pause, 3 beeps. The Alarm Voice will say “Warning, evacuate smoke in [Location, example: “Kitchen”]. Evacuate.” The Power/ Smoke LED flashes Red and the CO LED will be Off.
• Next the Horn will sound 4 beeps, pause, 4 beeps. The Alarm Voice will say “Warning, evacuate carbon monoxide in [Location, example: “Kitchen”]. Evacuate.” The Power/Smoke LED will be Off and the CO LED flashes Red.
• If the unit does not alarm, make sure the batteries are correctly installed, and test again. If the unit still does not alarm, replace it immediately.

Setup Guide

Setting up the First Alert Smoke & Carbon Monoxide Alarm SCO500 is straightforward: 

• Choose a location on the wall or ceiling away from corners and edges. 
• Remove the protective film from the battery compartment. 
• Mount the alarm using the provided screws or adhesive strips. 
• Test the alarm by pressing the test button until it sounds. 
• Ensure all family members are familiar with the voice alerts and LED lights.

REGULAR MAINTENANCE

This unit has been designed to be as maintenance-free as possible, but there are a few simple things you must do to keep it working properly.

• Test it at least once a week.
• Clean the Smoke/CO Alarm at least once a month; gently vacuum the outside of the Smoke/CO Alarm using your household vacuum’s soft brush attachment. A can of clean compressed air (sold at computer or office supply stores) may also be used. Follow manufacturer instructions for use. Test the Smoke/CO Alarm. Never use water, cleaners or solvents since they may damage the unit.
• If the Smoke/CO Alarm becomes contaminated by excessive dirt, dust and/or grime, and cannot be cleaned to avoid unwanted alarms, replace the unit immediately.
• Relocate the unit if it sounds frequent unwanted alarms. See “Where This Alarm Should Not Be Installed” for details.

Choosing a replacement battery:
Your Smoke/CO Alarm requires two standard AA batteries. The following batteries are acceptable as replacements: Duracell MN1500. These batteries are available at many local retail stores.

WARNING!

• Always use the exact batteries specified by this User's Manual. DO NOT use rechargeable batteries. Clean the battery contacts and also those of the device prior to battery installation. Install batteries correctly with regard to polarity (+ and -).
• Please dispose of or recycle used batteries properly, following any local regulations. Consult your local waste management authority or recycling organization to find an electronics recycling facility in your area. DO NOT DISPOSE OF BATTERIES IN FIRE. BATTERIES MAY EXPLODE OR LEAK.

WARNING!
Keep battery out of reach of children. In the event a battery is swallowed, immediately contact your poison control center, your physician, or the National Battery Ingestion hotline at 202-625-3333 as serious injury may occur.
Actual battery service life depends on the Smoke/CO Alarm and the environment in which it is installed. All the batteries specified above are acceptable replacement batteries for this unit. Regardless of the manufacturer's suggested battery life, you MUST replace the battery immediately once the unit starts "chirping" (the "low battery warning".

To replace the batteries (without removing Alarm from the ceiling or wall):

1. Open the battery compartment.
2. Press tabs A and B as shown in the diagram and remove each battery.
3. Insert the new batteries, making sure they snap completely into the battery compartment. Match the terminals on the ends of the batteries with the terminals on the unit.

4. Close the battery compartment, and then test the unit by pressing the Test/Silence button.

   

WHAT YOU NEED TO KNOW ABOUT CO WHAT IS CO?
CO is an invisible, odorless, tasteless gas produced when fossil fuels do not burn completely, or are exposed to heat (usually fire). Electrical appliances typically do not produce CO. These fuels include: Wood, coal, charcoal, oil, natural gas, gasoline, kerosene, and propane.

Common appliances are often sources of CO. If they are not properly maintained, are improperly ventilated, or malfunction, CO levels can rise quickly. CO is a real danger now that homes are more energy efficient. "Air-tight" homes with added insulation, sealed windows, and other weatherproofing can "trap" CO inside.

SYMPTOMS OF CO POISONING
These symptoms are related to CO POISONING and should be discussed with ALL household members.

• Mild Exposure: Slight headache, nausea, vomiting, fatigue ("flu-like" symptoms.
• Medium Exposure: Throbbing headache, drowsiness, confusion, fast heart rate.
• Extreme Exposure: Convulsions, unconsciousness, heart and lung failure. Exposure to Carbon Monoxide can cause brain damage, death.

IMPORTANT!
This CO Alarm measures exposure to CO over time. It alarms if CO levels are extremely high in a short period of time, or if CO levels reach a certain minimum over a long period of time. The CO Alarm generally sounds an alarm before the onset of symptoms in average, healthy adults.

Why is this important? 
Because you need to be warned of a potential CO problem while you can still react in time. In many reported cases of CO exposure, victims may be aware that they are not feeling well, but become disoriented and can no longer react well enough to exit the building or get help. Also, young children and pets may be the first affected.

The average healthy adult might not feel any symptoms when the CO Alarm sounds.

However, people with cardiac or respiratory problems, infants, unborn babies, pregnant mothers, or elderly people can be more quickly and severely affected by CO. If you experience even mild symptoms of CO poisoning, consult your doctor immediately!

FINDING THE SOURCE OF CO AFTER AN ALARM
Carbon monoxide is an odorless, invisible gas, which often makes it difficult to locate the source of CO after an alarm. These are a few of the factors that can make it difficult to locate sources of CO:

• House well ventilated before the investigator arrives.
• Problem caused by "backdrafting."
• Transient CO problem caused by special circumstances.

Because CO may dissipate by the time an investigator arrives, it may be difficult to locate the source of CO. BRK Brands, Inc. shall not be obligated to pay for any carbon monoxide investigation or service call.

POTENTIAL SOURCES OF CO IN THE HOME

Fuel-burning appliances like: portable heater, gas or wood burning fireplace, gas kitchen range or cooktop, gas clothes dryer. Damaged or insufficient venting: corroded or disconnected water heater vent pipe, leaking chimney pipe or flue, or cracked heat exchanger, blocked or clogged chimney opening. Improper use of appliance/device: operating a barbecue grill or vehicle in an enclosed area (like a garage or screened porch). Transient CO Problems: "transient" or on-again-off-again CO problems can be caused by outdoor conditions and other special circumstances.

The following conditions can result in transient CO situations:

1. Excessive spillage or reverse venting of fuel appliances caused by outdoor conditions such as:
   • Wind direction and/or velocity, including high, gusty winds. Heavy air in the vent pipes (cold/humid air with extended periods between cycles).
   • Negative pressure differential resulting from the use of exhaust fans.
   • Several appliances running at the same time competing for limited fresh air.
   • Vent pipe connections vibrating loose from clothes dryers, furnaces, or water heaters.
   • Obstructions in or unconventional vent pipe designs which can amplify the above situations.
2. Extended operation of unvented fuel burning devices (range, oven, fireplace).
3. Temperature inversions, which can trap exhaust close to the ground.
4. Car idling in an open or closed attached garage, or near a home.

These conditions are dangerous because they can trap exhaust in your home. Since these conditions can come and go, they are also hard to recreate during a CO investigation.

HOW CAN I PROTECT MY FAMILY FROM CO POISONING?
A CO Alarm is an excellent means of protection. It monitors the air and sounds a loud alarm before Carbon Monoxide levels become threatening for average, healthy adults. A CO Alarm is not a substitute for proper maintenance of home appliances.

To help prevent CO problems and reduce the risk of CO poisoning:

• Clean chimneys and flues yearly. Keep them free of debris, leaves, and nests for proper air flow. Also, have a professional check for rust and corrosion, cracks, or separations. These conditions can prevent proper air movement and cause backdrafting. Never "cap" or cover a chimney in any way that would block air flow.
• Test and maintain all fuel-burning equipment annually. Many local gas or oil companies and HVAC companies offer appliance inspections for a nominal fee.
• Make regular visual inspections of all fuel-burning appliances.
• Check appliances for excessive rust and scaling. Also check the flame on the burner and pilot lights. The flame should be blue. A yellow flame means fuel is not being burned completely and CO may be present. Keep the blower door on the furnace closed.
• Use vents or fans when they are available on all fuel-burning appliances. Make sure appliances are vented to the outside. Do not grill or barbecue indoors, or in garages or on screen porches.
• Check for exhaust backflow from CO sources. Check the draft hood on an operating furnace for a backdraft. Look for cracks on furnace heat exchangers.
• Check the house or garage on the other side of shared wall.
• Keep windows and doors open slightly. If you suspect that CO is escaping into your home, open a window or a door. Opening windows and doors can significantly decrease CO levels.

In addition, familiarize yourself with all enclosed materials. Read this manual in its entirety, and make sure you understand what to do if your CO Alarm sounds.

REGULATORY INFORMATION FOR SMOKE/CO ALARMS

WHAT LEVELS OF CO CAUSE AN ALARM?
Underwriters Laboratories Inc. Standard UL2034 requires residential CO Alarms to sound when exposed to levels of CO and exposure times as described below. They are measured in parts per million (ppm) of CO over time (in minutes).

UL2034 Required Alarm Points*:

• If the alarm is exposed to 400 ppm of CO, IT MUST ALARM BETWEEN 4 and 15 MINUTES.
• If the alarm is exposed to 150 ppm of CO, IT MUST ALARM BETWEEN 10 and 50 MINUTES.
• If the alarm is exposed to 70 ppm if CO, IT MUST ALARM BETWEEN 60 and 240 MINUTES.

Approximately 10% COHb exposure at levels of 10% to 95% Relative Humidity (RH).

The unit is designed not to alarm when exposed to a constant level of 30 ppm for 30 days. CO Alarms are designed to alarm before there is an immediate life threat. Since you cannot see or smell CO, never assume it's not present.

• An exposure to 100 ppm of CO for 20 minutes may not affect average, healthy adults, but after 4 hours the same level may cause headaches.
• An exposure to 400 ppm of CO may cause headaches in average, healthy adults after 35 minutes, but can cause death after 2 hours.

Standards: Underwriters Laboratories Inc. Single and Multiple Station carbon monoxide alarms UL2034.

According to Underwriters Laboratories Inc. UL2034, Section 1-1.2: "Carbon monoxide alarms covered by these requirements are intended to respond to the presence of carbon monoxide from sources such as, but not limited to, exhaust from internal-combustion engines, abnormal operation of fuel-fired appliances, and fireplaces. CO Alarms are intended to alarm at carbon monoxide levels below those that could cause a loss of ability to react to the dangers of Carbon Monoxide exposure." This CO Alarm monitors the air at the Alarm, and is designed to alarm before CO levels become life threatening. This allows you precious time to leave the house and correct the problem. This is only possible if Alarms are located, installed, and maintained as described in this manual.

Gas Detection at Typical Temperature and Humidity Ranges: The CO Alarm is not formulated to detect CO levels below 30 ppm typically. UL tested for false alarm resistance to Methane (500 ppm), Butane (300 ppm), Heptane (500 ppm), Ethyl Acetate (200 ppm), Isopropyl Alcohol 200 ppm) and Carbon Dioxide (5000 ppm). Values measure gas and vapor concentrations in parts per million.

Audible Alarm: 85 dB minimum at 10 feet (3 meters).

RECOMMENDED LOCATIONS FOR SMOKE ALARMS

Installing Smoke Alarms in Single-Family Residences
The National Fire Protection Association (NFPA), recommends one Smoke Alarm on every floor, in every sleeping area, and in every bedroom. In new construction, the Smoke Alarms must be AC powered and interconnected. See "Agency Placement Recommendations" for details. For additional coverage, it is recommended that you install a Smoke Alarm in all rooms, halls, storage areas, finished attics, and basements, where temperatures normally remain between 40° F (4.4" C) and 100° F (37.8 C). Make sure no door or other obstruction could keep smoke from reaching the Smoke Alarms.

More specifically, install Smoke Alarms:

• On every level of your home, including finished attics and basements.
• Inside every bedroom, especially if people sleep with the door partly or completely closed.
• Sheeping areas, install a uning each. yahr is more than to feet long (12 meters), install a unit at each end.
• At the top of the first-to-second floor stairway, and at the bottom of the basement stairway.

IMPORTANT!
Specific requirements for Smoke Alarm installation vary from state to state and from region to region. Check with your local Fire Department for current requirements in your area. It is recommended AC or AC/ DC units he interconnected for added protection.

AGENCY PLACEMENT RECOMMENDATIONS

NFPA 72 Chapter 29
"For your information, the National Fire Alarm and Signaling Code, NFPA 72, reads as follows:"

29.5.1* Required Detection.

29.5.1.1* Where required by other governing laws, codes, or standards for a specific type of occupancy, approved single and multiple-station smoke alarms shall be installed as follows:

1. In all sleeping rooms and guest rooms
2. Outside of each separate dwelling unit sleeping area, within 21 ft (6.4 m) of any door to a sleeping room, with the distance measured along a path of travel
3. On every level of a dwelling unit, including basements
4. On every level of a residential board and care occupancy (small facility), including basements and excluding crawl spaces and unfinished attics
5. In the living areas of a guest suite (smal facilit reals) of a residential board and care occupancy

Signing with Corigin 2010 Nationa: Nat Protection Association, Quincy, MA 02269. This reprinted material is not the complete and official position of the National Fire Protection Association, on the referenced subject which is represented only by the standard in its entirety), (National Fire Alarm and Signaling Code and NFPA 72 are registered trademarks of the National Fire Protection Association, Inc., Quincy, MA 02269).

California State Fire Marshal (CSFM)
Early warning detection is best achieved by the installation of fire detection equipment in all rooms and areas of the household as follows:

A Smoke Alarm installed in each separate sleeping area (in the vicinity, but outside bedrooms), and Heat or Smoke Alarms in the living rooms, dining rooms, bedrooms, kitchens, hallways, finished attics, furnace rooms, closets, utility and storage rooms, basements, and attached garages.

ABOUT SMOKE ALARMS

Battery (DC) operated Smoke Alarms: Provide protection even when electricity fails, provided the batteries are fresh and correctly installed. Units are easy to install, and do not require professional installation.

AC powered Smoke Alarms: Can be interconnected so if one unit senses smoke, all units alarm. They do not operate if electricity fails.

AC with battery (DC) back-up: will operate if electricity fails, provided the batteries are fresh and correctly installed. AC and AC/DC units must be installed by a qualified electrician.

WIRELESS INTERCONNECT

Smoke Alarms with battery (DC) back- up: Interconnects with all WIRELESS INTERCONNECT enabled Smoke and Smoke/CO Alarms without wires or connectors, so when one alarm sounds, they all sound. Will operate if electricity fails, provided the batteries are fresh and correctly installed. Units are easy to install, and do not require professional installation.

Smoke/CO Alarms for Solar or Wind Energy users and battery backup power systems: AC powered Smoke/CO Alarms should only be operated with true or pure sine wave inverters. Operating this Alarm with most battery-powered UPS (uninterruptible power supply) products or square wave or "quasi sine wave" inverters will damage the Alarm. If you are not sure about your inverter or UPS type, please consult with the manufacturer to verify.

Smoke Alarms for the hearing impaired: Special purpose Smoke Alarms should be installed for the hearing impaired. They include a visual alarm and an audible alarm horn, and meet the requirements of the Americans With Disabilities Act. Can be interconnected so if one
unit senses smoke, all units alarm.

Smoke alarms are not to be used with detector guards unless the combination has been evaluated and found suitable for that purpose. All these Smoke Alarms are designed to provide early warning of fires if located, installed and cared for as described in the user's manual, and if smoke reaches the Alarm. If you are unsure which type of unit to install, refer to National Fire Protection Association (NFPA) 72 (National Fire Alarm and Signaling Code) and NFPA 101 (Life Safety Code). National Fire Protection Association, One Batterymarch Park, Quincy, MA 02269-9101. Local building codes may also require specific units in new construction or in different areas of the home.

SPECIAL COMPLIANCE CONSIDERATIONS

This Smoke Alarm is suitable for use in apartments, condominiums, townhouses, hospitals, day care facilities, health care facilities, boarding houses, group homes and dormitories provided a primary fire detection system already exists to meet fire detection requirements in common areas like lobbies, hallways, or porches. Using this Smoke Alarm in common areas may not provide sufficient warning to all residents or meet local fire protection ordinances/regulations.

This Smoke Alarm alone is not a suitable substitute for complete fire detection systems in places housing many people-like apartment buildings, condominiums, hotels, motels, dormitories, hospitals, health care facilities, nursing homes, day care facilities, or group homes of any kind. It is not a suitable substitute for complete fire detection systems in warehouses, industrial facilities, commercial buildings, and special- purpose non-residential buildings which require special fire detection and alarm systems. Depending on the building codes in your area, this Smoke Alarm may be used to provide additional protection in these facilities.

In new construction, most building codes require the use of AC or AC/ DC powered Smoke Alarms only. In existing construction, AC, AC/ DC, or DC powered Smoke Alarms can be used as specified by local building codes. Refer to NFPA 72 (National Fire Alarm and Signaling Code) and NFPA 101 (Life Safety Code), local building codes, or consult your Fire Department for detailed fire protection requirements in buildings not defined as "households",

HUD MAP Program
Certain HUD battery powered Smoke Alarm applications, especially those that fall under HUD 223(f) MAP (Multi-family Accelerated Processing), may require a 10 Year sealed tamper resistant battery. This alarm does not meet that requirement. Substitute First Alert SA340B.

GENERAL LIMITATIONS OF SMOKE/CO ALARMS

This Smoke/CO Alarm is intended for residential use. It is not intended for use in industrial applications where Occupational Safety and Health Administration (OSHA) requirements for Carbon Monoxide Alarms must be met. The Smoke Alarm portion of this device is not intended to alert hearing impaired residents. Special purpose Smoke Alarms should be installed for hearing impaired residents (CO Alarms are not yet available for the hearing impaired).

Smoke/CO Alarms may not waken all individuals
Practice the escape plan at least twice a year, making sure that everyone is involved - from kids to grandparents. Allow children to master fire escape planning and practice before holding a fire drill at night when they are sleeping. If children or others do not readily waken to the sound of the Smoke/COAlarm, or if there are infants or family members with mobility limitations, make sure that someone is assigned to assist them in fire drill and in the event of an emergency. It is recommended that you hold a fire drill while family members are sleeping in order to determine their response to the sound of the Smoke/CO Alarm while sleeping and to determine whether they may need assistance in the event of an emergency.

Smoke/CO Alarms cannot work without power
Battery-operated units cannot work if the batteries are missing, disconnected or dead, if the wrong A unis cannot work in the A power is cus art for any talso open Yuse. or circuit breaker, failure along a power line or at a power station, electrical fire that burns the electrical wires, etc.). If you are concerned about the limitations of battery or AC power, install both types of units. This Smoke/CO Alarm will not sense smoke or CO that does not reach the sensors. It will only sense smoke or CO at the sensor. Smoke or CO may be present in other areas. Doors or other obstructions may affect the rate at which CO or smoke reaches the sensors. If bedroom doors are usually closed at night, we recommend you install an alarm device (Combination CO and Smoke Alarm, or separate CO Alarms and Smoke Alarms) in each bedroom and in the hallway between them.

This Smoke/CO Alarm may not sense smoke or CO on another level of the home

Example: This alarm device, installed on the second floor, may not sense smoke or CO in the basement. For this reason, one alarm device may not give adequate early warning. Recommended minimum protection is one alarm device in every sleeping area, every bedroom, and on every level of your home. Some experts recommend battery powered Smoke and CO Alarms be used in conjunction with interconnected AC powered Smoke Alarms. 

Smoke/CO Alarms may not be heard
The alarm horn loudness meets or exceeds current UL standards of 85 dB at 10 feet (3 meters). However, if the Smoke/CO Alarm is installed outside the bedroom, it may not wake up a sound sleeper or one who has recently used drugs or has been drinking alcoholic beverages. This is especially true if the door is closed or only partly open. Even persons who are awake may not hear the alarm horn if the sound is blocked by distance or closed doors. Noise from traffic, stereo, radio, television, air conditioner, or other appliances may also prevent alert persons from hearing the alarm horn. This Smoke/CO Alarm is not intended for people who are hearing impaired.

The Alarm may not have time to alarm before the fire itself causes damage, injury, or death, since smoke from some fires may not reach the unit immediately. Examples of this include persons smoking in bed, children playing with matches, or fires caused by violent explosions resulting from escaping gas.

This Smoke/CO Alarm is not a substitute for life insurance
Though this Smoke/CO Alarm warns against increasing CO levels or the presence of smoke, BRK Brands, Inc. does not warrant or imply in any way that they will protect lives. Homeowners and renters must still insure their lives.

This Smoke/CO Alarm has a limited life
Although this Smoke/CO Alarm and all of its parts have passed many stringent tests and are designed to be as reliable as possible, any of these parts could fail at any time. Therefore, you must test this device weekly. The unit should be replaced immediately if it is not operating properly. All Smoke/CO Alarms need to be replaced every 7 years. All Smoke Alarms need to be replaced every 10 years.

This Smoke/CO Alarm is not foolproof
Like all other electronic devices, this Smoke/CO Alarm has limitations. It can only detect smoke or CO that reaches the sensors. It may not give early warning of the source of smoke or CO is in a remote part of the home, away from the alarm device.

First Alert Smoke & Carbon Monoxide Alarm SCO500 Troubleshooting

Pros & Cons

Pros

• Comprehensive Protection: Detects both smoke and carbon monoxide.
• Long-Lasting Battery: A 10-year sealed battery reduces maintenance.
• Clear Voice Alerts: Easy-to-understand warnings for all family members.
• Ease of Installation: Simple setup process with included mounting hardware.

Cons:

• No Smart Home Integration: Does not connect to smart home systems.
• Sensitivity Issues: Some users report occasional false alarms due to high sensitivity.
• No Additional Features: Limited to basic smoke and CO detection without additional features like humidity sensing.

Customer Reviews

Customers generally praise the First Alert SCO500 for its reliability and ease of use. Many appreciate the clear voice alerts and the convenience of a 10-year battery life. However, some users have reported occasional false alarms and a lack of smart home integration as potential downsides. 

Here are some common complaints: 

• Some users find it too sensitive, leading to false alarms. 
• The lack of smart home integration is a drawback for tech-savvy users. 
• A few users have reported issues with battery life, though this is less common.

Warranty

BRK Brands, Inc., ("BRK") the maker of First Alert brand products warrants that for a period of seven years from the date of purchase, this product will be free from defects in material and workmanship. BRK, at its option, will repair or replace this product or any component of the product found to be defective during the warranty period. Replacement will be made with a new or remanufactured product or component. If the product is no longer available, a replacement may be made with a similar product of equal or greater value. This is your exclusive warranty.