3. of 7 ... (Model 9120B only). If you can, remove the batteries. I want to simply turn the alarm off for the night as it keep going off. First Alert Smoke Detector Keeps Chirping/Beeping 5 Times Every 45 Seconds Came home today and our First Alert model 9120B smoke detector/fire alarm was chirping 5 times every 45 seconds. Just installed 4 new (connected) "First Alert" smoke detectors' Model 9120B. That means it was not necessary to un-wire and re-wire new pigtails into their wall boxes before replacing each detector. I'm just afraid it could have something to do with carbon monoxide or something, so if anyone has any experience with this please let me know. Have fire escape ladders or other reliable means of Open as PDF. And … Usually it's something simple that needs to be fixed, like a low battery. Find the device that’s going off and reset it by pressing and holding the reset button. Some smart detectors include Nest Protect, Halo Smart Labs, First Alert and Roost. BRK Electronics First Alert 9120B-48B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm - Saving 48-Pack BRK Electronics First Alert 7030BSL 120V AC/DC Hardwired Smoke & Carbon Monoxide Alarm with LED Strobe and 10-Year Sealed Lithium Battery Backup It goes off intermittently. We check the whole house every time (for my peace of mind) and no issues. FIRE SAFETY TIPS. AC Powered Smoke Alarms with Battery Back-up and Silence 120V AC ~, 60 Hz, 0.04A. Improved UV Resistance keeps the alarm from discoloring over time. Your first step is to find the device that’s going off and reset it by pressing and holding the reset button. This detector also integrates with up to six other compatible devices, such as bells, horns, and repeaters. If that doesn’t work, take the smoke alarm down. When I powered them up they all went into alarm mode; and I can't get them to shut up! Good news: The connecting pigtails included with the new First Alert smoke detectors are identical to the pigtails in my 10-year-old First Alert same-model detectors, which these are replacing. Works in Tandem with Other First Alert Alarms:In addition to functioning independently, this smoke alarm can also integrate with up to 12 other First Alert or BRK hardwired alarms for coverage of larger spaces. First Alert BRK 3120B – if you’re looking for units with dual sensors, you should include this model in your list of options. View and Download First Alert 9120B user manual online. The Smoke Alarm Is Chirping . I figured maybe the sensor had dust. Bought the 2 pack (First Alert p1210) from Costco in April 2017. 5. It doesn't seem to be going off anymore and my father is going around resetting all the alarms by holding the reset button for 3 - 5 seconds, which makes a loud noise and turns the light green. 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