When you replace the battery, you must press the test button to check that the alarm is functioning correctly. For maximum reliability, replace the battery at least once per year. Also, replace the battery if the alarm does not sound when the Test button is pressed. The heat alarm will also beep once per minute, but the red light will not flash at the same time when the battery is low. When the battery power is low and replacement is necessary, the smoke alarm will beep and the red light will flash at the same time about once per minute for at least 30 days. This will stop as soon as the battery charge point exceeds the lower threshold.Ī fresh Alkaline battery should last for over a year. If the alarm has been chirping/beeping as a result of mains power failure and the battery is nearing charge depletion, the alarm may continue to chirp/beep for a few hours while the rechargeable battery is being recharged after mains power restoration. If in doubt contact a licensed electrician.

Please check and reset the circuit breaker in your home’s distribution board and return to examine the status of the indicators.

If the green LED is not illuminated, then there has been a mains power failure and the smoke alarm back-up battery is nearing depletion. You may see the red LED flash every 40 seconds, this is perfectly normal and indicates that a “self-test” cycle has been conducted. Look at the smoke alarm and ensure that the green LED is illuminated. If the alarm is beeping about once a minute with the red light flashing at the same time, indicates that the lithium battery is partially depleted and the alarm needs to be replaced (check the “replace by” date marked on the side of the alarm).ġ0-year lithium rechargeable, non-replaceable back-up battery To distinguish between the two, please take the following steps Battery Powered The two main reasons that smoke alarms chirp or beep is to alert the occupants of a low power condition or to alert of a contaminated detection chamber. The sounder is used when the communication is important (or imminently dangerous).

The smoke alarm is equipped with a sounder and LED’s in order to communicate with you. The most important thing is to not ignore this, as they are warning signs of either a danger in the home or that an alarm needs maintenance. There are a number of possible reasons why a smoke alarm could be beeping.

Download red flashing on smoke detector