The 8310 Electromagnetic Lock from RCI features single point locking with an adjustable mounting bracket with keyhole mounting and a removable cavity cover for quick and easy access to wiring. The built-in, adjustable time delay with instant unlocks and delayed relock can be controlled by any standard switching device. Other notable characteristics include brushed anodized aluminum or brushed dark bronze finish, MOV surge protection, low energy consumption, stabilizing 4-hole Drop Stop mag mounting and more. These are cULus Listed, MEA and CSFM certified devices.