How to fit burglar alarm door contact to double glazing door? ...
Answers: With a wooden door contacts are either fixed/screwed onto the door and frame surface or they can be fitted flush into the door/frame by drilling and setting them within the drilled holes, surface mounted fittings are usually oblong, flush fitting, round. Oblong fittings should be surface fixable on to upvc, at the top out of the way, beside good part double sided sticky tape.
yep.. but also obtain a decent unresponsive lock.. or one that is a bolt that go all the course up the door.. blinds are a good theory.. if they can't see what is inside. no temptation. but yer they do sensors for adjectives sorts of doors to keep thieving little toe rag out...