First alert smoke alarm blinking green light and beeping

The First Alert 3120B smoke detector is a highly efficient and reliable household safety device. It is designed to detect the presence of smoke in residential settings, providing an early warning system for potential fires. This smoke detector follows industry-standard protocols and is certified for compliance with safety regulations.

On a peaked, gabled, or cathedral ceiling, install first Smoke/CO Alarm within 3 feet (0.9 meters) of the peak of the ceiling, 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.This article applies to Onelink Smart Home Smoke & Carbon Monoxide hardwired alarm (model 1042135). The night light feature is not available for the battery-operated model since it would consume too much power from the battery. Use the Onelink Home app . Open the Onelink Home app on your phone or tablet.A chirp is quieter and more intermittent than a regular alarm. Chirping is typically caused by improper mounting, a low battery, or alarm end-of-life. Note: This article applies to the Onelink Smart Smoke & Carbon Monoxide Alarm (models 1042135, 1042136, AC-500, and DC-500). My Onelink alarm is single chirping once per minuteAn end-of-life timer lets you know when the device should be replaced. Model: SA3210. Dual Sensor Smoke Alarm with 10-Year Sealed Battery. Model: P1210E. 10-Year Battery Photoelectric Smoke Alarm, Slim Profile with Escape Light. Model: CO710. Carbon Monoxide Alarm with 10-Year Battery and Digital Temperature Display.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.The First Alert SCO5 Battery Operated Combination Smoke and Carbon Monoxide Alarm detects both smoke and carbon monoxide in a single detector. The CO and smoke alarm is battery operated, allowing you to easily install it. The photoelectric sensor detects smoke produced by smoldering fires and minimizes false alarms from cooking smoke or shower ...First Alert SC9120B Smoke Alarm User Manual. Open as PDF. of 11. 1. INTRODUCTION. Thank you for choosing BRK Brands, Inc. for your Smoke and Carbon. Monoxide Alarm needs. You have purchased a state-of-the-art Smoke &. CO Alarm designed to pr.Here are the steps to reset your smoke detector: Switch the circuit breaker off from the panel. Remove the alarm from its stand and unplug the power cable or batteries. Press the test button and hold it down for approximately 15 seconds. Reconnect the power source and turn on the smoke alarm.

Designed to help promote household safety, the First Alert 9120B Hardwired Smoke Alarm with Battery Backup can provide a vital early warning for fires. This ...Green and Red Flashing Light: If you see a green and red flashing light, it indicates that the alarm has been reset. You may see this light code after replacing the battery or testing the alarm. No Light: If there is no light, this could mean that the alarm is not receiving power.Some smoke detectors have a red blinking light to show low battery. Frequently, this will be accompanied by some beeping sound. This is the most typical interpretation, yet it could indicate something else depending on the make and model of the smoke detector. Changing the batteries and testing the smoke detector is advisable if this is the case.First Alert Smoke Alarm Red Blinking Light Understanding the Different Alert Signals. ... One of the most common issues faced by users is when the smoke alarm starts chirping or beeping for no apparent reason. This can be quite irritating and disruptive, especially if it occurs during the night. The primary cause of this problem is usually a ...For maximum protection, use both types of Smoke Alarms on each. level and in every bedroom of your home. Key Features of the P1210 Smoke Alarm: Photoelectric Sensing Technology: Photoelectric Sensors are generally. more sensitive than ionization sensors in detecting smoldering fires. which commonly occur in couches or bedding.Smoke Detector Flashing Green Light - Why? According to First Alert, their smoke alarms have a green light that blinks to show that the device has power. Some models from this brand use a red light. A green LED signifies normal operations. ... The smoke detector flashes green and chirping is due to a battery issue. The smoke detector will ...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.Model SA511 3055574. Printed in Mexico. M08-0194-000 Q 03/07. IMPORTANT! PLEASE READ CAREFULLY AND SAVE. This user’s manual contains important information about your Smoke Alarm’s operation. If you are installing this Smoke Alarm for use by others, you must leave this manual—or a copy of it—with the end user.

If your smoke alarm is chirping even though it has a new battery, try these troubleshooting steps to clear out residual charge from the old battery. Remove the alarm from your ceiling or wall. Open the cover and take out the battery. Press and hold the test button for 15-30 seconds. If your digital carbon monoxide alarm says “END” on the display, this means it has reached the end of its life and needs to be replaced. The alarm will also chirp 5 times per minute to let you know it’s time for replacement. Learn more about CO Alarms: Learn what to do if your digital carbon monoxide detector display says, "END."Replace the battery. Most often, a chirping First Alert Alarm means that it's low on battery. If you hear a single chirp every 30-60 seconds, you most likely have a low battery and simply need to change them. 2. Reset the smoke alarm.A solid green or blue light on your smoke detector means all is good. It tells you the device has power and is working right. The X-Sense smoke detector, for example, shows a steady green to let you know it's ready to go. You can feel safe when you see this light because it says the alarm will alert you if there's smoke.

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AC and AC/DC units will have a power indicator light (red or green) that shines when they are receiving electrical power. If you have a 10-year model, the smoke alarm may not have been properly activated. If the tab broke away before the alarm was activated, you can use a toothpick to move the switch over to test the alarm. 120-volt hardwired smoke alarm wires directly into your home’s electrical system. Smoke detector can integrate with up to 18 compatible devices for extended coverage. Photoelectric sensor detects smoke from smoldering fires while minimizing false alarms. Universal mounting bracket and hardwire quick connect plug for hassle-free installation.May 30, 2021 · If the light wasn't flashing before and it has recently started, you may need to reset the unit. If the blinking has begun due to a power outage, for instance, you need to locate and press the Test/Silence button or a similarly labeled button. Be warned that the unit will make a very loud piercing sound; however, after you've pressed the button ... The SM100V-AC Interconnect Hardwire Smoke Alarm with Battery Backup and Voice & Location Alerts is a superior choice for protection against fire. Easily add protection throughout your home or replace existing hardwire alarms using the hardwire quick connect plug - no rewiring needed. Also equipped with a backup battery to provide continuous ...

If the light wasn't flashing before and it has recently started, you may need to reset the unit. If the blinking has begun due to a power outage, for instance, you need to locate and press the Test/Silence button or a similarly labeled button. Be warned that the unit will make a very loud piercing sound; however, after you've pressed the button ...Smoke Alarm ONLY: Smoke Alarm sounds when no smoke is visible. *For a list of acceptable replacement batteries, see "Regular Maintenance." If you have questions that cannot be answered by reading this manual, call Consumer Affairs at 1-800-323-9005, M-F 7:30 a.m. to 5:00 p.m. (CST) BRK Brands, Inc., ("BRK") the maker of First Alert...Some smoke detectors have a red blinking light to show low battery. Frequently, this will be accompanied by some beeping sound. This is the most typical interpretation, yet it could indicate something else depending on the make and model of the smoke detector. Changing the batteries and testing the smoke detector is advisable if this is the case.Therefore, smoke alarms may not sense fires starting in chimneys, walls, on roofs, on the other side of a closed door or on a different floor. • If the alarm is located outside the bedroom or on a different floor, it may not wake up a sound sleeper. • The use of alcohol or drugs may also impair one's ability to hear the smoke alarm. For ...If the blinking red light is coming from the sensor chamber of your firex smoke alarm, it probably means that there's dust or insects in the sensing chamber. These can be a common cause of false alarms in the home. For example, if your unit is located near a cold air return, the dusty air can be blown through the sensing chamber and trigger ...Mar 17, 2023 · A flashing green light usually indicates that the device is working correctly and has a reliable power source. The green color typically serves as an indicator of normal operation, which should alleviate any worry that there is something wrong with the device. Depending on the type of smoke detector, it might take up to 30 seconds for the light ... Pull the latch with your finger and the battery compartment will swing out. Remove the old batteries and press the test/silence button for 15 seconds. This drains any residual low power from the old batteries. Insert a fresh 9-volt battery, and your fully powered smoke alarm will stop chirping. Your First Alert 9120B smoke alarm can help keep ...Mar 11, 2024 · The blinking green light on a smoke detector typically indicates that the device is functioning properly and is in normal operation mode. It serves as a visual confirmation that the smoke detector is powered on, has passed its self-checks, and is actively monitoring for smoke or fire hazards. In some cases, a steady green light may indicate ... Noise Output: 85 dB in a T3 Pattern. Single Button: One press to silence and test alarm. Easy Installation: Quick-Connect wiring for easy installation. Standards: UL 217, UL 2034 and UL 1971 for visual signal devices. Warranty: 10 Year Limited. Product Dimensions (LxWxH): 5.5 x 3 x 5.5.in. Product Weight: .87 lbs.The GCO1 Combo Explosive Gas and Carbon Monoxide Alarm is easy to set up and does not require any wiring. The compact detector plugs into any standard AC wall outlet without obstructing other sockets and comes with a line cord for versatile placement options. The alarm also features a 9-volt backup battery to help ensure continued protection in ...This shows that the smoke alarm is receiving electricity and is functioning correctly. An LED power light on smoke alarms indicates that the device is receiving electricity. A white light appears on certain smoke alarms (particularly First Alert), while a green light appears on others. Some smoke detectors flash every 30 or 60 seconds, while ...How To Deal With A Flashing Green Light On Smoke Detector. The Best Smoke Detectors In 2023 Por Science. Have A Ion About Kidde 10 Year Worry Hardwired Smoke Detector With Voice Alarm And Ambient Light Ring Pg 1 The. How To Deal With A Flashing Green Light On Smoke Detector. Why Is My Smoke Alarm Blinking Detector. Why Is My Smoke Detector ...

4 Beeps and a Pause: EMERGENCY. This means that carbon monoxide has been detected in the area, you should move to fresh air and call 9-1-1. 1 Beep Every Minute: Low Battery. It is time to replace the batteries in your carbon monoxide alarm. 5 Beeps Every Minute: End of Life. This chirp means it is time to replace your carbon monoxide alarm.

120-volt hardwired smoke alarm wires directly into your home's electrical system. Ionization smoke sensor reliably detects particles from fast-flaming fires. Can integrate with up to 12 other First Alert or BRK hardwired smoke detectors. Easy-to-access battery compartment; 9-volt battery included. Hassle-free installation, no need to rewire.First Alert Smoke Alarm Red Blinking Light Understanding the Different Alert Signals. ... One of the most common issues faced by users is when the smoke alarm starts chirping or beeping for no apparent reason. This can be quite irritating and disruptive, especially if it occurs during the night. The primary cause of this problem is usually a ...Low Battery: The most common cause of a blinking light on a smoke detector is a low battery. When the battery power decreases, the smoke detector’s indicator light starts flashing to notify you that the battery needs to be replaced. It’s crucial to address this promptly by replacing the battery with a fresh one.First off, power surges might be the culprit. These sudden increases in electrical power can confuse your smoke detector, causing it to beep uncontrollably. Power surges can happen for several reasons: Heavy electrical loads. Faulty wiring. Lightning strikes. Or maybe it's an issue with the circuit breaker.Learn what to do if your smoke alarm is chirping even after you install new batteries. About our 10-Year Battery Alarms Learn about 10-year-battery alarms offered by First Alert and BRK.We would like to show you a description here but the site won't allow us.Dec 30, 2022 · Your first step is to find the device that’s going off and reset it by pressing and holding the reset button. If that doesn’t work, take the smoke alarm down. If you can, remove the batteries ... A chirp is quieter and more intermittent than a regular alarm. Chirping is typically caused by improper mounting, a low battery, or alarm end-of-life. Note: This article applies to the Onelink Smart Smoke & Carbon Monoxide Alarm (models 1042135, 1042136, AC-500, and DC-500). My Onelink alarm is single chirping once per minute 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...Nov 15, 2023 · Here are the three common reasons why your smoke detector is blinking green. 1. The power status. The smoke detectors mostly use green light to indicate the device’s power status. If it blinks every two seconds, the battery is dying. You can remove the smoke detector to replace the batteries in such cases.

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Reset. If the red blinking light on your first alert smoke alarm is flashing nonstop, it could be a sign of something more serious. This could be a power outage, low battery, or a weak or missing signal. If it's a battery-powered device, changing the batteries should fix the problem. Most smoke detectors emit a low-battery chirp or beep and ...3. Take out its battery, then press the "Test" button, holding it down for 15 seconds. An alarm will sound briefly; then, the alarm will silence. 4. Install the battery in the smoke detector, reconnect the power cable, and mount the smoke detector back on its mounting bracket. Turn the breaker on.Let's start by discussing some of the possible causes of a First Alert Smoke Alarm that keeps going off. 1. Accumulation of Dust and Dirt. In most cases, you would be dealing with the buildup of dust and dirt inside the device. This is one of the most common reasons for smoke alarm malfunctions. With time, dust and dirt will accumulate on the ...Mar 17, 2023 · A flashing green light usually indicates that the device is working correctly and has a reliable power source. The green color typically serves as an indicator of normal operation, which should alleviate any worry that there is something wrong with the device. Depending on the type of smoke detector, it might take up to 30 seconds for the light ... Step 1: Silence your alarm. To silence a nuisance alarm, press and hold the Silence Button on your unit. This will quiet the horn so you can find what caused the alarm. Step 2: Review these possible fixes. Take a moment to review these questions to help uncover the cause of the false alarm and correct any issues.A smoke detector blinks blue when there is an increase in carbon monoxide gas in your area. Smoke detectors are usually made to identify smoke in your area. As it can detect smoke, it can also detect hazardous gasses as well. Smoke detectors can detect CO gas easily. This gas is hazardous to health.During an alarm, you will hear a loud, repeating horn pattern: 3 beeps, pause, 3 beeps, pause. - Silencing the low battery warning. This user manual provides all the information (according to the table of contents) from First Alert about the 3120B AC Powered Photo and Ion Smoke Alarm with Battery Back-Up and Silence.We would like to show you a description here but the site won't allow us. ….

Learn how to determine the approximate total battery life of your smoke, CO, or smoke/CO combination alarm. Find more information about your First Alert or BRK product, including manuals, tutorials, and more.There is a Power Failure. The Honeywell system is capable of letting you know if its AC supply is cut off. When this happens, the system will not only beep but provide a message that reads AC LOSSor NO AC. The beeping sound is supposed to indicate to the homeowner that the device is now running on a backup battery. SPECIAL REQUIREMENTS FOR INTERCONNECTED SMOKE ALARMS • Failure to meet any of the above requirements could damage the units and cause them to malfunction, removing your protection. • AC and AC/DC Smoke Alarms can be interconnected. Under AC power, all First Alert®BRK® Smoke BRK® BRK®BRK® • A Alarm. Alarm. (+ and -). Alarm. Alarms Vivint CO Detector - Troubleshoot Beeping. When your Vivint CO Detector battery gets low, you will be alerted on your panel first with an alert on the home screen. The detector itself will not chirp for a low battery until it gets to a critical battery level. If it gets to that point, you will hear a chirp from the detector every 45 seconds and ...A solid green light with a blinking red light on your smoke detector may indicate various issues. The solid green light usually signals that the detector is receiving power, while the blinking red light often indicates a problem, such as a malfunction or a low battery. Refer to the user manual for your specific smoke detector model to identify ...If the alarm starts beeping once every 40 seconds, the backup battery needs replacing. If you wish to replace the battery later, press the test/hush button to snooze the chirping for 10 hours. 2. False alarm. If your smoke alarms are going off when there is no smoke present, firstly identify the unit which has been triggered.On a peaked, gabled, or cathedral ceiling, install first Smoke/CO Alarm within 3 feet (0.9 meters) of the peak of the ceiling, 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.Low Battery: The most common cause of a blinking light on a smoke detector is a low battery. When the battery power decreases, the smoke detector’s indicator light starts flashing to notify you that the battery needs to be replaced. It’s crucial to address this promptly by replacing the battery with a fresh one. First alert smoke alarm blinking green light and beeping, Heat Alarms. Maximum number of 12 smoke alarms. Smoke Sensor: Photoelectric Strobe Light: 177 candela LED strobe Indicator Lights/Sounds: AC Power: Constant Green LED DC Power: Green LED flash, once per minute Local Alarm: Audio alarm, steady flashing strobe and flashing Red LED Remote Alarm (Smoke): Audio alarm, steady flashing strobe and ..., Turn off the circuit breaker. Remove the battery. Press the hush button on the front of the cover and hold it in for 15 seconds. Reinstall the battery and turn the circuit breaker back on. The unit may chirp once when you do this. If you have a sealed smoke detector, you should consult your owner's manual for the procedure to reset it., Review the chart to find manuals for common First Alert, Onelink, and BRK products. If your model isn't listed here, follow the steps in the previous section to locate it. ... Troubleshoot Chirping on CO Alarms; How to Replace 9V Batteries in Smoke or CO Alarms; Proper placement for smoke alarms, CO alarms, and fire extinguishers;, Learn what to do if your smoke alarm is chirping even after you install new batteries. About our 10-Year Battery Alarms Learn about 10-year-battery alarms offered by First Alert and BRK., Kidde fire alarms are an essential part of any home’s safety system. They are designed to alert residents in the event of a fire and provide valuable time to evacuate safely. Howev..., Refer to the chart to learn what "chirps" or "beeps" mean on CO alarms. Troubleshoot 1 chirp ... Proper placement for smoke alarms, CO alarms, and fire extinguishers. ... Number of Views 6.21K. Prevent False Carbon Monoxide (CO) Alarms. Number of Views 23.08K. First Alert Compatibility: Ways to Interconnect Smoke and/or CO Alarms. Number of ..., Green and Red Flashing Light: If you see a green and red flashing light, it indicates that the alarm has been reset. You may see this light code after replacing the battery or testing the alarm. No Light: If there is no light, this could mean that the alarm is not receiving power., Gently vacuum smoke alarms regularly using the soft brush attachment. Be sure electricians install the provided dust cover to keep alarm clean during construction. Insects covered or clogged the sensor chamber. Clean the smoke alarm with the soft brush attachment on your vacuum. Alarm was triggered from another part of the home., If the light wasn't flashing before and it has recently started, you may need to reset the unit. If the blinking has begun due to a power outage, for instance, you need to locate and press the Test/Silence button or a similarly labeled button. Be warned that the unit will make a very loud piercing sound; however, after you've pressed the button ..., Learn why the NFPA recommends that smoke alarms be replaced every 10 years (at least). About alarm life expectancy / expiration. ... Install a Battery-Powered First Alert Alarm. Learn the step-by-step process for installing a battery powered alarm. Photoelectric vs Ionization Smoke Alarms., Concentric waves are seen radiating from the volcano, suggesting continued eruptions. After triggering a tsunami earlier this week, one of modern history’s deadliest volcanic areas..., It is recommended that you install special units which use devices like flashing strobe lights to alert the hearing impaired residents. ... 3 beeps, pause, 3 beeps, pause. If the unit does not alarm during testing, call Consumer Affairs for assistance. ... Download First Alert 0827 - Smoke Alarm With Ten-Year Battery Pack Manual. Advertisement., To do this, first, turn off the power to the smoke alarm by flipping the circuit breaker. Then, remove the battery from the smoke alarm. Wait for a few minutes, and then put the battery back in and turn the power back on. Test the smoke alarm by pressing the test button. If it still chirps every 40 seconds, move on to the next step., First Alert smoke alarm beeping after battery change Sometimes your First Alert smoke detector may keep beeping after changing the battery. To stop the noise, you can reset the smoke alarm., Learn why the NFPA recommends that smoke alarms be replaced every 10 years (at least). About alarm life expectancy / expiration. ... Learn about 10-year-battery alarms offered by First Alert and BRK. General Help. Alarm Battery Drawer Won't Close. Learn how to fix an alarm battery drawer that won't close., A carbon monoxide detector protects you by sensing the concentration of this toxic gas in the air and sounding an alarm when levels are high for too long. How quickly carbon monoxide (or CO) will ..., The GREEN Light flashes about every 60 seconds when the unit is receiving battery power. ... 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! ... Download First Alert SCO5RVA - Combination Smoke And Carbon Monoxide Alarm Manual. Advertisement., Noise Output: 85 dB in a T3 Pattern. Single Button: One press to silence and test alarm. Easy Installation: Quick-Connect wiring for easy installation. Standards: UL 217, UL 2034 and UL 1971 for visual signal devices. Warranty: 10 Year Limited. Product Dimensions (LxWxH): 5.5 x 3 x 5.5.in. Product Weight: .87 lbs., If your smoke alarm is chirping even though it has a new battery, try these troubleshooting steps to clear out residual charge from the old battery. Remove the alarm from your ceiling or wall. Open the cover and take out the battery. Press and hold the test button for 15-30 seconds. , Here are the steps to reset your smoke detector: Switch the circuit breaker off from the panel. Remove the alarm from its stand and unplug the power cable or batteries. Press the test button and hold it down for approximately 15 seconds. Reconnect the power source and turn on the smoke alarm., The green blinking light is a common indicator on many smoke detectors. It serves as a status indicator, providing essential information about the detector’s operational condition. Knowing how to interpret this light can help you address potential issues promptly and ensure your smoke detector functions optimally., This Alarm must have AC or battery power to operate. If the AC power fails, battery back-up will allow the alarm to sound for at least 4 minutes. If AC power fails and the battery is weak, protection should last for at least 7 days. If AC power fails and the battery is dead or missing, the alarm cannot operate., Oct 24, 2021 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ... , Step 1: Silence your alarm. To silence a nuisance alarm, press and hold the Silence Button on your unit. This will quiet the horn so you can find what caused the alarm. Step 2: Review these possible fixes. Take a moment to review these questions to help uncover the cause of the false alarm and correct any issues. , To find the initiating unit you must look for the alarm with a fast blinking light while the alarms are sounding. If the event stops before the alarm is found, you can use the latch feature to find out which alarm was triggered. Latching Alarm Indication - Alarm Latch and Low Battery Latch Certain Interconnect alarms have a Latching Alarm ..., The First Alert P1210 Slim Profile Photoelectric Smoke Alarm with 10-Year Sealed Lithium Battery helps protect your home by providing up to a decade of uninterrupted monitoring. This low-profile smoke alarm uses a photoelectric sensor to detect smoke from slow-burning, smoldering fires. Half as thick as a standard fire alarm, this photoelectric ..., Learn why the NFPA recommends that smoke alarms be replaced every 10 years (at least). About alarm life expectancy / expiration. ... Learn about 10-year-battery alarms offered by First Alert and BRK. General Help. Alarm Battery Drawer Won't Close. Learn how to fix an alarm battery drawer that won't close., All First Alert Alarms come with a Test Button. With the battery removed from the unit, press and hold this button for 30 seconds. This will fully reset the alarm, removing the residual charge of the previous battery. Reinsert the battery and then press the Test Button. A loud beep will notify you that the alarm is functioning., Open a window or door and press the Silence Button on your alarm. Wave a towel at the alarm to clear the air. Move the entire alarm several feet away from the kitchen or bathroom. After the smoke clears, you should place your alarm back on the ceiling or wall. To reduce nuisance alarms from cooking, keep it at least 10 feet away from cooking ..., 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., Step 1: Silence your alarm. To silence a nuisance alarm, press and hold the Silence Button on your unit. This will quiet the horn so you can find what caused the alarm. Step 2: Review these possible fixes. Take a moment to review these questions to help uncover the cause of the false alarm and correct any issues., The green blinking light is a common indicator on many smoke detectors. It serves as a status indicator, providing essential information about the detector’s operational condition. Knowing how to interpret this light can help you address potential issues promptly and ensure your smoke detector functions optimally., Should my First Alert smoke detector blinking green? If your First Alert smoke detector is blinking green, it could be a normal indication that the unit is functioning properly. However, if you notice any other unusual behavior, such as beeping or flashing red lights, you should check the user manual or contact the manufacturer.