movement sensor

[mister_e]

And then you'll discover that you'll spend more time to do a efficient sensor than if you just buy a already made one It's not as this expensive. Wel that's my opinion.

When you buy one, there's only 4 wires to route to it : 2 for supply and 2 for the contact output (NO or NC)

But if you want to have my own opinion of it, i still prefer to place more contact and glass break than use any motion sensor. In the past (and probably it's still the same thing today), after few years, the sensitivity and accuracy of those sensor reduce. What i try to say is that it seems that the sensor don't react at some place in it's range. Kind of 'blind' or 'spotted' sensor. I know there's somebody here who work in this area.. so if i'm wrong or partially, set me straight!

For the control panel, it's still a good idea to build your own.