detectors and detection systems, namely, electronic intrusion detectors, microwave detectors, passive infrared detectors, photoelectric beam detectors; motion detectors; detectors with built in cameras; audio glass break detectors; and safe and vault detectors, but specifically excluding electric digital inductive loop vehicle detectors; electronic alarms and alarm control equipment, namely fire and smoke sensors, fire and smoke alarms, alarm communication transmitters, power supplies, audio alarm horns and strobe lights; access control equipment and systems; namely electronic keys and cards; readers, door controllers, and request-to-exit sensors for doors; personal safety and asset tracking systems composed of radio transmitters, receivers, alert units, transponders, and a central computer which receives the alarm and trouble signals, activates the alert units which trigger alarm units, and displays the user's or asset's name, description and current location on alarm map; closed circuit television products and accessories, namely cameras, monitors, switches, lenses, video cassette records, and related cctv accessories, namely, video amplifiers, camera housings, video compressors, pan and pan-tilt heads, and mounting brackets; security communication equipment, namely radios, intercoms, pagers and walkie talkie