electronic security systems comprised of monitors, cideo cameras, video cassette recorders, electronically readable coded cards, transponders, control consoles, sensors to indicate physical changes, printers, and alarm indicators (visual and audible); fire detection systems comprised of heat sensors, sensors to indicate physical changes including combustion, obscuration, and rate of temperature rise, manual pull stations, transponders, control consoles, printers, and alarm indicators (visual and audible), critical process systems comprised of sensors to measure process variables (presence of gas, temperature, pressure, and quantity) of various materials, controllers, and monitors, fire fighting apparatus; namely, sprinkler apparatus and sprinkler maintenance aapparatus; access control systems comprised of video cameras, video recorders, microphones, speakers, electronically readable coded cards, card readers, keypads, combination keypad/reader panels, control consoles, printers, modems, door exit controls, alarm sensors, and alarm output signallers for use in controlling access to commercial, industrial, educational or governmental buildings; closed circuit television systems comprised of video cameras, video cassette recorders, video cassette recorders, monitos, lenses, camera mounts, camera control systems, camera enclosures, control consoles, and printers; and parts therefor

installation, maintenance and repair services for electronic security systems, fire detection systems, critical process systems, sprinkler maintenance systems, access control systems, closed circuit television, systems, vaults and automatic teller machines

monitoring of security systems, fire detection systems, critical process systems, sprinkler maintenance systems, access control systems, closed circuit television systems; police protection services, security guard services, and private investigative services in the fields of commercial, industrial, and government facilities, sports complexes, power plants, and crowd control, and providing temporary security guard personnel for assistance at special events