Seco-Larm E-941SB-1200 Black 1,200-lb Electromagnetic Lock, UL Listed 120 Liftmaster K305-153613 IDLER SPROCKET

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Seco-Larm E-941SB-1200 Black 1,200-lb Electromagnetic Lock, UL Listed 120 Liftmaster K305-153613 IDLER SPROCKETThe E 941Sx series of electromagnetic locks is the ideal way to secure a door against unauthorized entry. When power is applied to the electromagnetic lock, it creates an extremely strong magnetic field. The electromagnet is strongly attracted to the steel armature plate which is mounted on the secured door. Once the electromagnet is deactivated, the secured door will function normally without any residual magnetism.