These are cute. They mount inside the wall. Used to sense the opens and closes of door, windows, anything. You can write a book on alarm equipment. Drill 3/8 hole in door jam, and a 3/8 hole in door. Insert into door the magnet. Into the Jam insert the sensor, solder connections together. Assumes you have pulled the cable of course. These units can be sanded, painted, made invisible. Worth every penny of effort. Work great. Door deflection of 3/4 inch triggers unit. I use them, and they work. Can't see themPricing:
1-6 7+
$C 3.45 3.31
$US 3.45 3.31
EURO 2.45 2.35
