I don't like wireless alarms, I have installed them for people who wanted them but I still don't like them. They are good for installers, easy to install and you can do a yearly maintenance on them which will just involve changing the batteries and testing it still works. In my opinion, as with most things, you cant beat wired for reliability.
This is an old thread and you did not comment on the pet friendly PIR's.
I use Texecom 3D Petwise detectors where my dog is and she does not set them off here is a link to them
http://cpc.farnell.com/texecom/3d-pe...pir/dp/SR04708
Cats can be a pain because they climb and may be able to get close to the PIR. In that case you can blank off sections of the lens to prevent accidental activations.
Please don't start offering your business services without requesting permission from the site administrator or you will probably find yourself banned for braking the site rules