In order to replace the batteries:
1. Remove the detector from the SmartBracket mounting panel.
2. Turn off the device.
3. Unscrew 3 screws and remove the back lid of the detector.
4. Replace the batteries with new CR123A batteries observing polarity.
Never install used or damaged batteries.
5. Turn on the detector and check the battery status in the app.
The battery status is not updated instantly but during the next polling of the devices (by default, every 36 seconds).