electronic security systems comprised of monitors, video 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 control 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 apparatus; access control systems comprised of video cameras, video recorders, microphones, speakers, electronically readable coded cards, card readers, keypads, combination keypads/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, monitors, lenses, camera mounts, camera controllers, camera enclosures, control consoles, and printers; and parts therefor

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