Seco-Larm E-942FC-600 Enforcer Electromagnetic Gate Lock, 600-lb (272kg) Holding Force, Face Mounting, For Indoor & Outdoor Applications, 12/24 VDC Operation

Prevent unauthorized visitors from gaining entry to your home or business. This electromagnetic lock (mag-lock) was designed for outdoor use to keep sliding and swinging electric gates securely closed. It has 600 pounds of holding force, when power is applied to the magnetic lock it turns on the unit's powerful built-in electromagnet. The lock can be triggered by your security system, relay switch, or even with a standalone RF transmitter and receiver system (each sold separately).