Sep 16, 2026
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If your security system reports a low-battery condition, follow the steps below to replace the batteries.
Important: If the alarm system is monitored, place the system on test with the monitoring station before replacing the batteries to prevent an unnecessary alarm signal or dispatch.
Battery Replacement Procedure
- Place the alarm system on test with the monitoring station.
- Remove the smoke detector from its mounting base. Depending on the model, this may require twisting the detector counterclockwise or releasing a locking mechanism.
- Carefully remove the existing batteries. A small flathead screwdriver may be used if needed, following the battery compartment instructions.
- Wait at least 30 seconds before installing the new batteries.
- Install the correct replacement batteries, following the polarity markings (+/-) inside the detector.
- Reinstall the smoke detector onto its mounting base and ensure it is securely locked in place.
- Allow the detector to power up and return to normal operation. The LED indicator and startup sequence will vary by model.
- Confirm that the low-battery condition has cleared from the alarm system.
- Clear the system test with the monitoring station.
If the low-battery condition does not clear after replacing the batteries, or if the detector does not return to normal operation, further troubleshooting may be required. Contact the help desk for assistance.

