Smoke alarms will make a ‘beep’ or ‘chirping’ sound when they have a low battery or are faulty. Is red light supposed to flash on smoke detector? If your device includes a keypad press “*72” or if your smoke detector is hardwired, look for a reset button to push and hold for 20 seconds. If you want to manually reset the smoke detector so that the red blinking light will stop, you can press the test/silence button for a few seconds. How do you reset the red light on a smoke detector? Install new batteries, which will cause a brief beep to indicate the detector is functioning normally.Press and hold the silence button, approximately 10-15 seconds, until it stops beeping.CAUTION: Your Smoke/CO Alarm is sealed and the cover is NOT removable! After 20-30 seconds the green LED light will flash indicating the unit is now operational. READ: What is SAP HANA in simple terms? Why is my fire alarm blinking red and green?Īfter the batteries are correctly installed the unit will beep once and the red LED light will flash.
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