The MultiMag series of electromagnetic locks are designed for easy installation and multi-purpose operation for interior or perimeter doors. The mounting bracket has keyhole mounting to support the magnet, freeing the installer's hands to affix the magnet mounting screws. The removable cavity cover offers quick, easy access to wiring. The RCI 8310 MultiMag applies to single outswinging doors, while the RCI 8320 MultiMag is for double outswinging doors. For additional security monitoring these electromagnetic locks offer optional door status and security condition sensors. Built-in time delay, instant release with adjustable relock, programmable from 0-90 seconds. MOV surge protection designed to overcome residual magnetism.