The 1078C series recessed contacts are designed specifically for use in the steel doors commonly found in commercial building applications. The unique housing design of the 1078C contact features a rugged unibody construction with flexible ribbed sides for quick, secure installation without gluing. The magnet housing isolates the magnet from the surrounding steel for maximum gap distances. A wide gap model is available to protect against false alarms from loose-fitting doors, and a high security model is also available.