Frequently asked questions
How to delete the paired coding on 755LPSMA4 Smoke Alarm?
FAQ000191360
22 October 2025
Please note: It is not recommended to remove or delete the coding from the MASTER alarm.Remove slave alarm from the bracket before performing the steps below.
- Remove the unit from mounting bracket to power OFF the unit.
- Press and hold Test/Hush button and then install the unit back to mounting bracket to power ON the unit.
- Red LED will light on for 3 seconds. Only release the button after Red LED light is off.
- Red LED will light on for another 3 seconds. During these 3 seconds, briefly press Test/Hush button to delete the coding.
- Red Led will flash for 5 seconds if deleting is successful.
Attached is the installation instructions of 755LPSMA4 for more info.