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