I damaged a pir whilst decorating,so I changed it.The alarm activated intermittently when set.I changed the pir thinking it was faulty.same thing happened again.So I renewed the wiring for the pir.Same thing happened,alarm going off.I have omitted that zone after reading previous posts.Alarm working ok now.any suggestions welcome please.

peter llewelen, February 2012

Yeh, and read the installation instructions.

no name, February 2012

yes we have pets,the pir I changed was from the old alarm system,that we changed years ago.didn't occur to me there's a difference until you mentioned pet tolerant pir.I will get one thanks

peter llewelen, February 2012

If the systems stability was ok before you renewed the pir, then you have incorrecty wired it,or it could be another device on that zone that has failed.

A coincidence I know,but it does happen.


if you are utilising the two core cable,then that's doesn't count,however connection security does.

Is it possible you have fitted a none pet tolerant pir... got any pets....to a pet tolerant pir system?.

If you can rule these factors out,have you set the pulse count to minimize detection of environmental disturbances?.

Change it from setting 1 to 2/4.

Setting 1 can be a little sensitive for a living room,especially if it on the small side.

no name, February 2012