These hard-working multi-purpose electromagnetic locks enhance building security and install quickly. Several standard features make these magnets the workhorse of the industry. The adjustable mounting bracket has been enhanced with keyhole mounting to support the magnet's weight during initial installation, freeing the installer's hands to affix the magnet mounting screws. The removable cavity cover offers quick, easy access to wiring. These models feature a built-in, adjustable time delay with instant unlock and de-layed relock, which can be controlled by any standard switching device.