First alert carbon monoxide alarm 5 beeps

Troubleshoot Chirping on CO Alarms. Learn More >. Remove an Alarm from the Ceiling or Wall. Learn More >. Proper placement for smoke alarms, CO alarms, and fire extinguishers. Learn More >. Smoke or CO Alarm Expiration Dates: Frequently Asked Questions. Learn More >. About alarm life expectancy / expiration.

Thank you for choosing Onelink by First Alert for your safety needs. In addition to the alarm sounds, you canreceive notifications in case of an emergency to help provide a warning of a fire or carbon monoxide leak while you are home or away. Please take time to read this manual and make this alarm an integral part of your family's safety plan.For more information or to purchase this product, visit http://www.FirstAlertStore.com or click the link below.http://www.firstalertstore.com/store/products/...View and Download First Alert FCD1R user manual online. Replacement Sensor Pack' Module For First Alert Carbon Monoxide Alarms Model FCD1, FCD1AC, NICO, NICOAC, FACO, FACOAC and BRK Electronics' Models BRKDCO, BRKCO, C01000B. CO1120B and Family Gartf. FCD1R smoke alarm pdf manual...Find more information about your First Alert or BRK product, including manuals, tutorials, and more. ... Search "" Close search. Smoke & Carbon Monoxide Alarms. Model: CO605 / CO605B / CO606. Download product manual. Register your product. Buy now. Setup. Where should I install carbon monoxide alarms and in particular, how high off the floor ...First Alert offers a variety of alarms to help ensure your family is protected, including a tabletop alarm with a 10-year sealed battery and digital display. Combination Smoke and Carbon Monoxide Alarms. First Alert also offers combination smoke and carbon monoxide alarms, which provide 2-in-1 protection against both smoke and carbon …

First Alert CO606 Carbon Monoxide Alarm User Manual. Open as PDF. of 1 INSTALLATION. W. HERE TO INSTALL CO ALARMS. The National Fire Protection Association (NFPA) recommends that a CO ... During testing, you will hear a loud alarm sequence – 4 beeps, pause, 4 beeps, pause. The alarm sequence should last 5-6 …Call 911 or the Local Emergency Number. Once you are outside and safely away from the potential source of carbon monoxide, call 911 or your local emergency number to report the situation. Inform them that your carbon monoxide detector has gone off, and they will dispatch the appropriate responders to assess the situation.Under no circumstance should an alarm be ignored. Learning to identify why a carbon monoxide alarm is beeping is vital to help keep your family and your home safe. Who to Call for a Carbon Monoxide Check. If the …Therefore, move away from the room and call for emergency assistance. Three Beeps Every 15 Minutes. Three chirps after 15 minutes reveal that the carbon monoxide detector is incorrectly mounted or faulty. Therefore, inspect the CO device for faults and replace it with a compatible unit.Product Details. Power Source: Plug in. Battery Backup: Two AA. Sensor: Electrochemical. Backlit Digital Display: Shows the level of carbon monoxide in the room, as well as the power level of the backup batteries. Single Button: One press to silence and test alarm. End of Life Timer: Alarm chirps when it is time to replace it.The First Alert CO250B Battery-Operated Carbon Monoxide Alarm uses an advanced electrochemical CO sensor to detect elevated carbon monoxide levels from a variety of sources, such as faulty fuel-burning appliances, blocked chimneys, and cars left running in the garage. When CO is detected, the carbon monoxide detector sounds a loud 85-decibel ...Learn what 5 beeps every minute means for your CO alarm and how to replace it. Find out how to prevent CO leaks and poisoning with proper installation and maintenance of CO detectors.I will be changing the battery and testing my Carbon Monoxide Detectors. This should be performed on a yearly basis. Each floor needs a separate detector. Pl...

SKU: 3120B. 4.4 / 5.0. (2442 Reviews) WHERE TO BUY. The First Alert® Hardwired Dual Sensor Smoke Alarm with Battery Backup is designed to provide peace of mind. The photoelectric and ionization sensors alert you to both smoldering and fast-flaming fires, offering comprehensive detection and early warning. The 85-decibel fire alarm can also ...1043251 Hardwired Combination Smoke and CO Alarm with Battery Backup. SKU: 1043251. WHERE TO BUY. 120-volt hardwired smoke and carbon monoxide alarm wires directly into your home's electrical system. Emits a spread spectrum horn tone designed to be heard easily by those with age-related hearing loss. Photoelectric smoke sensor with Optipath 360 ...Is your fire alarm beeping? Learn what each type of chirp from your smoke detector indicates and what you need to do to protect your family from danger. Learn how to keep your home and family safe with smoke and carbon monoxide tips, fire safety, and emergency escape planning from the most trusted brand in fire safety!Learn how to fix chirping sounds on Onelink Smart Smoke & CO alarms. Five chirps indicate end of life, while other chirps may be caused by low battery, improper …

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If the alarm had detected a CO level of 100ppm or higher when the Test/Reset button is pressed, the unit will announce "CARBON MONOXIDE PREVIOUSLY DETECTED" to warn of the CO incident. Part Number (Ordering Number): 900-0114. Kn-cosm-ib is a hardwire combination carbon monoxide and smoke alarm with battery backup and voice warning.Do not lock the battery compartment until you install the batteries and test the Smoke/CO Alarm. Install the batteries before attaching the Alarm to the bracket. Insert two (2) AA batteries (included) into the battery compartment. Match the terminals on the end of the battery with the terminals on the unit.First Alert Battery Powered Z-Wave Smoke Detector & Carbon Monoxide Alarm, Works with Ring Alarm Base Station, 2nd Generation 4.5 out of 5 stars 10,031 241 offers from $27.82BATTERY OPERATED CARBON MONOXIDE ALARM WITH DIGITAL DISPLAY AND SILENCE FEATURE. CO410 carbon monoxide alarm pdf manual download. ... The alarm horn will sound: 4 beeps, a pause, then 4 beeps. The ALARM (RED) light will flash quickly. The alarm. ... Carbon Monoxide Alarm First Alert First Alert CO400 User Manual.

Take the first step toward protecting your home & family. Sign up to learn fire and carbon monoxide safety tips you can practice at home. SIGN UP TODAY. First Alert fire safety products, smoke, and carbon monoxide alarm systems for the home can be purchased at the First Alert Store Online or at the retailers like Amazon, Walmart, BestBuy and more. Same. Our First Alert smoke detectors have been a disaster. Bought our house 6/2020 and previous owners installed new detectors - First Alert photoelectric. One by one I had to disable them all due to unstoppable false alarms. Like OP, the company sent 3 new, no question. Said I needed to vacuum them every couple weeks.Product Details. Power Source: Plug in. Sensor: Electrochemical. Single Button: One press to silence and test alarm. End of Life Timer: Alarm chirps when it is time to replace it. Noise Output: 85 dB in a T4 Pattern. Standards: UL 2034. Warranty: 7 Year Limited. Product Dimensions (LxWxH): 5 x 1.7 x 3.4 in.About this item. Original BRK Replacement CO Alarm - Replaces the original BRK alarm that came with your RV, model CO250RVA. Hinged Cover Design - Allows for fast, easy installation and battery replacement. Silence Feature - Silence unwanted alarms. Test alarm with the same button.With 5 different batteries, you need 15 spares plus chargers. With AA you can carry it all in your pocket. AA-compatible devices can include AAA, AAAA, C, D, F, 14500, 18650, 21700, 26650, 32600, 32650, etc. Right to repair was first lost from tolerating proprietary batteries, pay per charge, and self-destruct explosions.Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room. A loud 85 decibel alarm sounds when carbon monoxide levels reach dangerous levels. To ensure complete protection make sure to place 1 on each level of your home and in each bedroom.Why Does My First Alert Smoke And Carbon Monoxide Alarm beeping? Easy Steps to Reset Your First Alert Smoke and Carbon Monoxide Alarm; Step 1: Locate the Reset Button; Step 2: Press and Hold the Reset Button; Step 3: Wait for the Beep; Step 4: Check the Indicator Lights; Common Troubleshooting Tips: Carbon Monoxide Detector Beeping 4 TimesThis CO Alarm is designed to detect carbon monoxide from ANY source of combustion. It is NOT designed to detect smoke, fire, or any other gas. This CO Alarm is approved for use in single-family residences. This CO Alarm will only indicate the presence of carbon monoxide gas at the sensor.

First Alert is the most trusted brand in fire safety. We offer a variety of smoke alarms, carbon monoxide (CO) detectors and combination smoke & CO alarms to help provide you peace of mind knowing your home and loved ones are protected. Smoke Alarms. Smoke alarms help provide an early warning in the event of a fire emergency.

Understanding Your Carbon Monoxide Detector Beeping • Learn why your carbon monoxide detector is beeping every 30 seconds in this must-watch video! Discover ...Is your fire alarm beeping? Learn what each type of chirp from your smoke detector indicates and what you need to do to protect your family from danger. Learn how to keep your home and family safe with smoke and carbon monoxide tips, fire safety, and emergency escape planning from the most trusted brand in fire safety!Importance of Beep Sounds. The beeping sounds emitted by carbon monoxide detectors play a crucial role in alerting us to the presence of potentially dangerous levels of carbon monoxide gas. These sounds serve as a warning signal, allowing us to take immediate action to protect ourselves and our loved ones.First Alert smoke detectors are a crucial component of home safety, providing early warning in the event of a fire. However, homeowners may occasionally experience false alarms or ...Help protect your home with the First Alert P1200A Slim Battery-Operated Photoelectric Smoke Alarm. This low-profile smoke alarm uses an ultra-reliable photoelectric sensor to detect smoke from slow-burning, smoldering fires. Half as thick as a standard alarm, this detector has a slim, contemporary design that mounts unobtrusively on a wall or ...Sitemap. 0% Financing Available for Qualified Applicants, Have Your Consultation Today. 888.627.3631. Take action when your carbon monoxide detector beeps. Get to safety and call the fire department. Learn how to handle it effectively in the article.Most of the time, the carbon monoxide detector is beeping because it senses the hazardous substance in the air. Typically, a carbon monoxide detector beeping continuously, pausing, and then beeping again usually means the poisonous gas has been detected. It may beep four times in a row before pausing and then beeping in that pattern again.This First Alert Carbon Monoxide and Smoke Detector worked for almost six years before dying. I'm not sure how long it was supposed to last, but I'm satisfied. ... In the past two years, 3 of the 5 have done the 3 beep per minute = malfunction alarm. FYI call the manufacturer to get a replacement if this happens. 7 people found this helpful ...AC POWERED CARBON MONOXIDE ALARM WITH BATTERY BACK-UP AND DIGITAL DISPLAY. CO5120BN carbon monoxide alarm pdf manual download. ... Carbon Monoxide Alarm First Alert KV-T29SN81 CO410 User Manual. ... CO ALARM SOUNDS WEEKLY TESTING Push and hold the Test/Silence button until you hear an acknowledge chirp and a loud alarm sounds — 4 beeps, pause ...

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PLUG-IN CARBON MONOXIDE ALARM WITH BATTERY BACK-UP AND SILENCE FEATURES. CO615 security sensors pdf manual download. ... (4 beeps, pause, 4 beeps) is issued. CO alarm, "CO" is. gas kitchen range or cooktop, gas clothes dryer. displayed along with. ... Carbon Monoxide Alarm First Alert CO615 User Manual.To obtain warranty service, please contact First Alert Support. Please have the model number and date of purchase available when calling. 1-800-323-9005. Mon - Fri (9 am - 8pm CST) Sat - Sun (9 am - 5:30 pm CST) Disposable Battery Operated Smoke/CO Warranty Service and Returns. How can I obtain warranty service on First Alert, Onelink, or BRK ...Sorry to interrupt Close this window. This page has an error. You might just need to refresh it. First, would you give us some details?The combination smoke and carbon monoxide alarm shall be Kidde Unit Number KN-COPE-I (part number 900-0213) or approved equal. It shall be powered by 120VAC, 60Hz source with a 9V battery backup. The temperature operating range shall be between 40°F and 100°F (4°C and 38°C) and the humidity operating range shall be 5% - 85% relative humidity.120V Plug-in Carbon Monoxide Alarm with Battery Backup & Digital Display. VIEW PRODUCT. 1039758 (GCO16CNA) 120V Plug-in Explosive Gas/Carbon Monoxide Combination Alarm. VIEW PRODUCT. 1039196. ... Be the First to Know. Receive email updates on our latest products, whole-home solutions, loyalty programs and access to technical training. ...Learn more about your state's smoke and carbon monoxide legislation. Help protect your home and family against the dangers of fire with a 10-year smoke alarm today. First Alert also offers 10-year sealed battery powered carbon monoxide detectors and 10-year sealed battery combination smoke and carbon monoxide alarms!Power Source: Hardwired. Battery Backup: 9V. Sensor: Ionization. Interconnect: Can be linked with up to 18 units (12 Smoke, 6 CO/Heat/Relay) Smart Technology :Helps reduce nuisance alarms. Noise Output: 85 dB in a T3 Pattern. Single Button: One press to silence and test alarm. Easy Installation: Perfect Mount System includes Gasketless Base.Call 911 or the Local Emergency Number. Once you are outside and safely away from the potential source of carbon monoxide, call 911 or your local emergency number to report the situation. Inform them that your carbon monoxide detector has gone off, and they will dispatch the appropriate responders to assess the situation.The detector has a sensor in it that can alert you to the possible presence of carbon monoxide, and you should generally trust it. The one exception is if it you only hear your carbon monoxide detector beeping every minute or two, which could be a low-battery warning signal. In those cases, you should immediately replace the battery, and if ...CO5120BN Carbon Monoxide Alarm manuals and instructions online. Download First Alert CO5120BN PDF manual. ... Battery Back-Up" tab. Push and hold the test button on the CO Alarm's cover until you hear an acknowledge chirp and the alarm sounds: 4 beeps, pause, 4 beeps, pause. ... Carbon Monoxide Alarm First Alert CO5120PDBN User Manual. Brk ...An unofficial test of a First Alert Model CO606 Carbon Monoxide Detector. After I made this video, I found another video which confirmed my findings. http://...Learn how to fix chirping sounds on Onelink Smart Smoke & CO alarms. Five chirps indicate end of life, while other chirps may be caused by low battery, improper … ….

1043251 Hardwired Combination Smoke and CO Alarm with Battery Backup. SKU: 1043251. WHERE TO BUY. 120-volt hardwired smoke and carbon monoxide alarm wires directly into your home's electrical system. Emits a spread spectrum horn tone designed to be heard easily by those with age-related hearing loss. Photoelectric smoke sensor with …User manual. First Alert Carbon Monoxide Alarm User Manual. 10 year sealed battery operated carbon monoxide alarm with digital display and silence feature. 2. page of 2. …Battery Backup: 9V. Sensor: Electrochemical. Single Button: One press to silence and test alarm. End of Life Timer: Alarm chirps when it is time to replace it. Noise Output: 85 dB in a T4 Pattern. Standards: UL 2034. Warranty: 7 Year Limited. Product Dimensions (LxWxH): 5 x 1.38 x 3.4 in. Product Weight: 1.1 lbs.Built-In 10-Year Battery for a Decade of Detection. The First Alert CO710 Carbon Monoxide Alarm with 10-year battery, features a built-in 10-year lithium-ion battery, so you don’t need to worry about replacing batteries or low battery chirps during the lifetime of the alarm. An end-of-life warning lets you know when the device should be replaced.If your carbon monoxide alarm keeps chirping, the battery may be low or weak. On First Alert carbon monoxide detectors, check to see if the battery light is yellow or green. If the alarm is chirping and the light is yellow, it means the battery is low. The way to get a carbon monoxide alarm to stop chirping is to replace the battery.Here is a step-by-step guide for the power up cycle of a first alert smoke detector. Firstly, after you install your smoke detector in your desired area, press and hold the Test/Silence button until you hear a sound. The alarm will run through its test sequence; 3 loud beeps is a smoke test indicator, while 4 loud beeps is the carbon monoxide test.Emergency carbon monoxide (CO) alarm: 4 loud beeps, repeating. When there is a high carbon monoxide level, your alarm will beep four (4) times in a loud, repeating pattern. First Alert alarms sequences are extremely loud at 85 decibels. This industry-standard alarm setting ensures that even people who are asleep will be alerted to emergencies First alert carbon monoxide alarm 5 beeps, The alarm horn will sound 4 beeps, a pause, then. 4 beeps. The ALARM (RED) light will flash. The alarm sequence should last 5-6 seconds. If it does not alarm, make ... Carbon Monoxide Alarm First Alert First Alert CO400 User Manual. Battery operated carbon monoxide alarm with silence feature (1 page), as with all my videos i try to give the most information in the least amount of time as possible so i dont waist your time. in this video go over how to diag..., First Alert Wireless Interconnect Battery Operated Carbon Monoxide Alarm With Voice Location - CO511B. Video. Availability: In Stock. Price: $65.95 $89.95. You Save: $24.00 (26% Off) - 3 Customer Reviews. *On Orders Over $59.00. Add to Cart. Buy In Bulk., Emergency carbon monoxide (CO) alarm: 4 loud beeps, repeating. When there is a high carbon monoxide level, your alarm will beep four (4) times in a loud, repeating pattern. First Alert alarms sequences are extremely loud at 85 decibels. This industry-standard alarm setting ensures that even people who are asleep will be alerted to emergencies, First Alert Carbon Monoxide Detector Alarm|No Outlet Required with Digital Display and Peak Memory, Battery Operated, CO410 , White. 4.6 out of 5 stars 1,471. ... 2-Pack Beeps Warning Smoke and CO Alarms for Basements Travel Home Office House Bedroom Living Room Car, Battery Operated, Comply with UL 217/2034., Product Details. Power Source: Plug in. Battery Backup: Two AA. Sensor: Electrochemical. Backlit Digital Display: Shows the level of carbon monoxide in the room, as well as the power level of the backup batteries. Single Button: One press to silence and test alarm. End of Life Timer: Alarm chirps when it is time to replace it., This carbon monoxide alarm features a permanently installed sensor, digital display with blue backlight, and an 85 dB alarm horn. It also has a silence feature to temporarily quiet the alarm horn. During standby, the temperature is displayed in degrees F. THE PARTS OF YOUR CO ALARM 1. should last 5-6 seconds., Insert the screws provided until head is approx. 1/8 inch (3 mm) from wall (if mounting in plaster board or drywall, drill 3/16 inch (5 mm) hole and use plastic anchor provided). Use mounting guide template to locate holes as shown in diagram below. Hook the Alarm over the screw onto the keyhole in back of unit., Learn what level of CO will trigger a First Alert carbon monoxide alarm. A CO alarm horn indicates an emergency situation, but in very rare cases, there can be false alarms. Learn how to prevent false alarms on your CO alarm. Find more information about your First Alert or BRK product, including manuals, tutorials, and more., To warn of dangerous CO levels, most detectors will beep 4 or 5 times in a row about every 4 seconds. Do not mistake dangerous levels of poisonous gas for a detector with low battery! Even if no one in the building is experiencing symptoms yet, if there's a chance your detector is signaling carbon monoxide, get everyone outside to fresh air. 3., Are you an employee? Login here. Loading, Blinking red lights are fairly common in smoke detectors, and it should be easy for you to discover why yours is doing the blinking. 1. Batteries are Low. Many First Alert smoke detectors have an LED light, which blinks red when the batteries need to be changed. In addition, a chirping or beeping noise may be heard., Depending on the sirens or beepings, you will take actions like if the detector went off and stopped it could be a false alarm as well. When a first alert carbon monoxide alarm beeps 5 times, it means the detector has become outdated or it has expired. The life span of a first alert detector is about 7 years and after that, you should change ..., Combination Smoke and Carbon Monoxide Detector Alarm, Beeps Warning Smoke Co Alarm Clock for Travel Home Bedroom Living Room Basement Attics Cars, Battery Operated, Comply with UL 217 and UL 2034, 1 Pack ... The First Alert SCO5RVA carbon monoxide and smoke alarm uses an electrochemical carbon monoxide sensor-the most accurate technology ..., 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., CO detectors communicate various statuses through beep patterns: A single beep every minute may indicate a low battery. Four quick beeps suggest the presence of carbon monoxide. Five beeps often signal the end of the detector's useful life. Beep patterns may vary between different brands and models, so as mentioned earlier, be …, Do not lock the battery compartment until you install the batteries and test the Smoke/CO Alarm. Install the batteries before attaching the Alarm to the bracket. Insert two (2) AA batteries (included) into the battery compartment. Match the terminals on the end of the battery with the terminals on the unit. , Learn what 5 beeps every minute means for your CO alarm and how to replace it. Find out how to prevent CO leaks and poisoning with proper installation and maintenance of CO detectors., CO problems can occur any time during the year, and this Alarm can only alert you if it is plugged in and receiving power. This CO Alarm is intended for use in a standard, unswitched 120V AC wall outlet. It is not intended for use in extension cords, power strips, or outlets controlled by a switch or dimmer., First Alert Slim Design 10-Year Battery Smoke and Carbon Monoxide Alarm. Model: 1039868. (73) $54.95 Save: $15.00. Availability: In Stock. Add to Cart. , No. We do not recommend installing smoke or carbon monoxide detectors in unfinished areas of the home. This includes attics, crawlspaces, garages, unheated areas, or porches. The sensors in smoke and CO alarms work best in temperatures between 40° F (4° C) and 100° F (38° C). Alarms in unfinished areas may experience more nuisance alarms ..., Carbon Monoxide Alarm. One on every level and in every bedroom. Fire Extinguisher. One on every level, plus kitchen and garage. 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 ..., Take the first step toward protecting your home & family. Sign up to learn fire and carbon monoxide safety tips you can practice at home. SIGN UP TODAY. First Alert fire safety products, smoke, and carbon monoxide alarm systems for the home can be purchased at the First Alert Store Online or at the retailers like Amazon, Walmart, BestBuy and more., Power Source: Plug in. Battery Backup: 9V. Sensor: Electrochemical. 3-in-1 Protection: Senses carbon monoxide, propane gas and natural/methane gas. Backlit Digital Display: Reveals current and peak carbon monoxide levels. Single Button: One press to silence and test alarm. End of Life Timer: Alarm chirps when it is time to replace it., Description. This unit from BRK (TM) is a combination smoke detector and electrochemical ion carbon monoxide detector designed to be hardwired to 120 V electrical power. It and can be interconnected with up to 12 smoke alarms, and up to 6 smoke/carbon monoxide combination alarms so all units will go into alarm if any single unit is triggered., For peaked, gabled, or cathedral ceilings, install the first Smoke Alarm within 3 feet (0.9 meters) of the peak of the ceiling, measured horizontally. Additional Smoke 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., Emergency carbon monoxide (CO) alarm: 4 loud beeps, repeating. When there is a high carbon monoxide level, your alarm will beep four (4) times in a loud, repeating pattern. First Alert alarms sequences are extremely loud at 85 decibels. This industry-standard alarm setting ensures that even people who are asleep will be alerted to emergencies, First Alert offers a variety of alarms to help ensure your family is protected, including a tabletop alarm with a 10-year sealed battery and digital display. Combination Smoke and Carbon Monoxide Alarms. First Alert also offers combination smoke and carbon monoxide alarms, which provide 2-in-1 protection against both smoke and carbon …, If your First Alert smoke alarm continues to beep, it is not a sign that it is broken or malfunctioning. Before calling a technician, check the power source, battery, and condition of the battery drawer. Resetting your smoke alarm is the best way to ensure it doesn't constantly beep. First Alert Smoke and Carbon Monoxide Alarm., Here are three ways to stop a Honeywell CO detector from chirping. Replace the carbon monoxide detector's battery. As soon as you start hearing your unit chirping, replace its battery with the same type. Ideally, the battery is changed every year. Battery replacement will reset your detector and make the chirping stop., Features. The First Alert CO600A Plug-In Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor that lasts for up to five years to detect carbon monoxide. This carbon monoxide detector plugs into any wall outlet. When carbon monoxide levels become elevated, a loud 85-decibel alarm alerts you to the threat., What do the different beep patterns for my carbon monoxide alarm mean? First Alert Carbon Monoxide Detectors have different beep patterns to communicate whether there is an emergency or simply a need to replace the unit. It is important to know the difference between the beeps. 4 beeps and a pause: This means that there is carbon monoxide in ..., SKU: CO605. 4.7 / 5.0. (18080 Reviews) WHERE TO BUY. The First Alert CO606 Carbon Monoxide Plug-In Alarm with battery backup features an electrochemical CO sensor to alert you to carbon monoxide. This carbon monoxide detector plugs into any standard electrical socket to monitor CO levels in your home. The simple, user-friendly design features ...