KAC's New enhanced range of single pole keyswitch devices provides switching solutions for a broad range of applications. These include fire, security, smoke vent, extinguishant systems and many other specialist applications. The robust switching device comprises a main housing and escutcheon plate. It is fitted to the plate which simply snaps into the main housing and is permanently located in place with fixing screws. All keyswitches are supplied with 2 sturdy keys.