Step 1: Silence your alarm
To silence a nuisance alarm, press and hold the Test/Silence button on your unit.
This will quiet the horn so you can find what caused the alarm.
If you’re not able to find the button, read our guide for more help: Use the Silence Button on Smoke or CO Alarms.
How do you silence a First Alert smoke detector?
Press and hold the “Test/Silence” button on the side of the detector for 10 seconds. Release the button to enter “Silence mode” which quits the alarm from sounding.
How do I get my smoke detector to stop beeping?
How to Stop Smoke Detector Beeping or Chirping –
Why is my First Alert smoke detector beeping?
It is likely that the reason your smoke alarm keeps chirping and beeping is that the battery is low. Whenever your smoke alarm keeps chirping, replace the battery immediately. Improper wiring on AC or AC/DC smoke alarms. AC alarms will chirp every 5 seconds if the interconnect wire is grounded.