Securitron / Assa Abloy - V2M600DB - Vista 600 lbs. Holding Force Magnetic Lock - 12 V DC, 24 V DC - 600 lb Holding Force: Amazon.com: Industrial & Scientific
Amazon.com: Securitron Assa Abloy Electronic Security Hardware - AQD1 Power Supply - 1 Amp; 12/24 Volt DC; Supervised in Enclosure : Electronics