12/24VDC Monitored. Designed for double door applications this slim line magnet has an electro-less nickel plated armature and aluminium housing and is available monitored or unmonitored. It has a holding force up to 600lbs (272kg) per door and the input voltage is switchable between 12V DC or 24 V DC.. Holding force up to 600lbs (272kg) per door. Operating voltage 12/24Vdc (Selectable). Electro-less nickel plated armature. Aluminium housing