Adjustable magnet with L bracket for fast installation. 24 in. Armored cable is standard Standard gap — 2-3/8 in. (60mm) minimum Epoxy sealed for protection from moisture and impact. Rugged Shock Absorber design protects reed against flex or damage to housing. Works well with Honeywell home security systems. Purchase with LiveWatch alarm monitoring and you can configure your home security system to call the police if there is an intruder, call the department if there is a or contact other emergency personal if there is a flood, freeze, carbon monoxide lead or other environmental issue. The Honeywell Ademco home security systems enable video monitoring, remote access, home automation, surveillance cameras and more.