The ODC-59 Series Overhead Door Contacts are exclusively designed for rugged high traffic installations. The reed switch is hermetically sealed with a PVC shock absorber enclosed within a solid aluminum housing. Installation wires are protected in a 24” stainless steel armored cable. The ODC-59 Series magnet is mounted on an adjustable L shaped bracket designed for greater flexibility, universal mounting, greater pulling power, and to provide a professional installation appearance. The ODC-59-HG (horizontal gap) is designed as a solution for damaged or loose fitting doors