The Ooma Smoke Alarm is powered by two lithium-ion batteries that are embedded within the unit. You will never need to replace the batteries over the unit’s lifetime. The batteries are expected to last up to ten years.

When the unit begins making short chirps every minute, you’ll know it’s running low on battery. You will need to replace the Smoke Alarm immediately.

When you are ready to replace your Smoke Alarm, you should permanently deactivate your existing device by following these instructions:

1. Rotate the device counterclockwise and remove it from the mounting bracket.
2. Press the PAIRING button, the TEST button, and the TAMPER button simultaneously to deactivate the device.
3. Use a too like a screwdriver to remove the red pin from its insert and push it into the square hole. This will prevent the device from being accidentally re-mounted on its mounting bracket.