As I’m starting to lay out system designs, I’ve come across a challenge I’d love to hear some opinions on. The bottom floor of my house is a (mostly) open floor plan layout, three rooms containing 15 windows, plus 3 more if you count the master bedroom. I’m not completely keen on the idea of putting window sensors on all of them, if for no other reason than initial cost considerations alone (trying not to blow the bank out of the gate). Even enough glass break sensors to cover the area would be pretty tough, and a bit lacking in entry coverage imho. Ideally I could use 2 (possibly 3) well placed motion sensors and be done, but then comes the challenge. In addition to the possible triggers from all the light of the windows, there are 3 cats in play.
The front half of the house I could probably manage as I think a decent Pet Immune sensor would work. The only furniture that would be in range of the sensor would be 20+ feet away. At that distance I’m thinking they wouldn’t be a factor. The back half is where the challenge comes in. That’s where the bulk of the windows are, plus the furniture is probably within about 10-15 feet of where the motion sensor would need to go.
So now we get to the suggestions part of today’s program. My initial hunch is to start off with the motion sensors, but set them in a group that wouldn’t trigger the alarm in away mode. Then I could keep track of detection events for a while to determine if they’d work or not. I’ve been doing a good bit of digging around the web for ideas, but that’s the best I’ve come up with so far. Any other suggestions on how to create a perimeter without needing ~15 window sensors?