intrusion security system, fire security system, or access control system, each system comprising a central processing unit featuring all or some of the following functions - intercom, paging, public address, door lock and light control, heat and smoke sensors movement and intrusion sensors alarm and emergency signaling devices

control system for correctional facilities comprised of a central processing unit and line card assemblies, providing logic, memory and control for door locks, lights and other high voltage devices, intercom and public address functions