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 system 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, microphone, 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 government buildings; closed circuit television systems comprised of video cameras, video cassette recorders, monitors, lenses, camera mounts, camera control systems, camera enclosures, control consoles, and printers; and parts therefor

installation, maintenance and repair service 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, and closed circuit television sytems, vaults and automatic teller machines