GRI - Switches and Contacts 
GRI 4532 Overhead Door Switch Set 4532

Lifetime Warranty , UL and ULC approved , Low cost , Miniature floor mount , Universal magnet for flexibility in mounting , Cast aluminum casings for harsh environments , 2' armored cable , 2"+ gap for loose overheads , Mounting hardware included , Built-in E.O.L. resistors available , Reed switch for reliability , Optional L bracket , Supervisory loops available

The 4532 series Overhead Door Switch Set is a miniature, low-profile reed switch in a cast aluminum for durability in harsh environments. The 4532 features a wide working gap of over 2" with two feet of heavy duty armored cable for protection from the elements and a versatile universal magnet which can be mounted at various angles for those difficult installations.