1. Ensure the panel is disarmed.
2. Open the sensor by twisting the sensor cover counterclockwise.
3. Remove the old battery.
4. Wait 15–20 seconds.
5. Install a replacement CR-123A battery.
6. Remount the smoke detector by lining up the grooves and twisting clockwise.
7. Check the panel to ensure the error has cleared.
If the error persists, please call our Account Specialists at 919-231-3990 for further assistance.