Securitron M68 Magnalock Dual Voltage 12 24 VDC 1200lb hold force. Bracket mounting provides the easiest install for out-swing doors. Innovative install templating for an effortlessly accurate alignment between magnet and armature plate. Sleek, low profile and refined lines for improved aesthetics. LED shows red or green for lock status indication. Autosensing dual voltage with microprocessor technology. Wire chamber anti-tamper switch. Efficient, low power usage. Size optimized for use with door closers.