Hi not sure if you have already looked at any install manuals for detectors but I've done a few with pet immunity and anywhere where pets can get up at a certain height can cause false alarms so be careful.  just as an example I've attached a link to a Honeywell activ8 pet immune detector.  I would at least mount it so it won't point towards anywhere that allows the dogs to be in a closer range to the detector, but if you also think about it a bunch of dogs could maybe pass as something larger that could trigger a false alarm?

 

https://www.tlc-direct.co.uk/Technical/DataSheets/Ade/TSACTIV8DT_Instructions.pdf

I'd probably go with what al-yeti said if it was me, otherwise it could end up more hassle than it's worth 

I'd recommend the siemens pir. Tested with a single large lab with np false alarms so far

https://www.securitywarehouse.co.uk/catalog/siemens-admq12ee01-eline-12m-wide-angle-pet-immune-pir-p-3131.html

I'd recommend the siemens pir. Tested with a single large lab with np false alarms so far

https://www.securitywarehouse.co.uk/catalog/siemens-admq12ee01-eline-12m-wide-angle-pet-immune-pir-p-3131.html

 

As above have used the above with 6 cats and another customer for 6 months with 2 large labs (now just one, sadly!).

 

Both monitored systems, set regularly.

You shot the fooker.

lol

Yeah monitored alarm for unset then sniped. Got to get those fa stats down somehow.

If they jump up on windowsills etc within 2 metres of the pir then false alarms will occur. Pet sensors do not cure all ills (salesmen/ surveyors) will say otherwise.

If the client absolutley wants the pets to have free roam then contacts on all perimeter doors/ windows and then confirmedl intervention visual or acoustic via the ARC? Lots of money.

It's a compromise. I would rather if they had pets then focus on a decent security system and keep the pets in the kitchen.

I always call them pet tolerent sensors rather then pet immune.