Replacing Batteries in Wireless PIR

Instructions for replacing batteries in FM Electronics wireless detectors:

Enter engineers code in control panel (4 6 7 9) for 4000E panel (PIN 0 4 6 7 9) for 4000X panel.

Replace batteries as required, ensure that the detector lid is correctly aligned to allow the PIR to work and the tamper switch is depressed.

Key in 4 8 on control panel to exit engineers mode.

Allow detectors to 'settle' for 20 mins before carrying out any tests.