I just installed a Bosch Blue Line P1 PIR in my bedroom. I'm amazed how insensitive it is. Standing immediately in front of it at a distance of 8 ft, I can side step a foot without triggering it. I can also wave my arms from side to side without triggering it. If I was a burgular, I would have no trouble at all in creeping past it. Does this sound right? It's the pet friendly version, but I removed the strip to revert it to a standard model.

Ian

there is more than that strip in difference between detectors and pet freindly detectors are a lot slower than non pet sensors however

Your testing it wrong.

It should not see your arm, or you moving a foot. It looking for your torso to take at least 2 steps.

If it were to detect your hand then it false alarm all the time.

It's probably my inexperience then. I haven't fitted a PIR for more than 15 years. The last one's I bought were far more sensitive, and yes they did mis-trigger sometimes.

Ian

but your also looking now at a pet sensor. Pet sensors are a lot slower, and that the primary reason i dont like them.

I think maybe I should replace it then. I can put this PIR in a downstairs room where I do have a cat.

agreed.

Dont get me wrong i think the bluelines are the best of the pet detectors, im just not a fan of the theory. When i have no choice but to use one (ie cant use perimeter protection) then we use the bluelines. And they are good.... for a pet sensor lol

What about the standard Blueline P1 (non pet) is this a more sensitive unit?

Yes

But you need to balance stability with detection.

If you want something quick, really quick but will false alarm, go for a cheap sensor as this has huge amplification on its pyro to make it work at all, but expect a lot of false alarms.

The blueline is a good unit, but id say the honeywell is215 was quicker. Id also say the optex rx40 was better (but not quicker)

you need to pick your sensor for your environment. They all have there plus and minus points

Well I certainly dont want something that will false alarm. I came in here for advice about the correct course of action.

I will try the Honeywell IS215. I notice that there are 2 variants... the IS215TCE and the IS215TQ. Is there much difference between them?

the tq is now obsolete and is/was a better sensor as its a quad.

However it was a 4737 sensor and is not compliant with the new regs

There is still the is215T (4737 varient) and the 215TCE (en 50131 varient)

Both excellent sensors. Primary differnce is the tce has temp compensation the t does not