Why Is My House Alarm Beeping Every 30 Seconds?

In the event that the battery is running low, the alarm will continue to chirp every 30–40 seconds (or every 60 seconds for certain alarms) for at least seven days. When this happens, you should test your alarm after replacing the battery. End of Life Condition The alarm will chirp once every 30 seconds to let you know it is time to replace the alarm (this condition only applies to models with sealed batteries).