One of my PIRs is not working after it has been moved because of some building work and I need to replace it. I think I can cope with the wiring but I need some advice on how to disconnect the old one and reconnect the new one without the alarm going haywire. Is there a process that I need to follow when working on the system to put it into some sort of maintenance mode to prevent the alarm triggering? I would be grateful for any advice and help.
Patrick

Patrick, March 2011

Do I need to disconnect the battery or turn the alarm off before I proceed? Does keying in the engineering code stop the alarm from going off?
thanks

Patrick, April 2011

... & don't blow a fuse

acorn, March 2011

key in the engineering code,then you will be able to remove the sensor

gts, March 2011