Tane SM-35WGGR Wide Gap Surface Mount Grey Contact (10 pack)

The Tane SM-35 WGGR is a normally-closed, wide-gap, surface mount door/window contact perfect for any opening that isn't exactly flush. The extra sensitive reed switch can detect its magnet up to 1.2 inches from the contact. This model also comes with spacers provided in case you need a little extra height on either side as well. While it is not weatherproof, the cover on the back of the contact covers up the terminals to provide a cleaner installation.