Security and fire electronic alarm detection and notification equipment, namely fire and smoke sensors, temperature sensors, emergency pull-box, fire and smoke alarms, alarm communication transmitters, fire command workstations, power supplies, audio alarm horns, voice evacuation systems, smoke evacuation systems, fire suppression systems, strobe lights, electronic intrusion detectors, microwave detectors, passive infrared detectors, fence intrusion detection systems, photoelectric beam detectors, motion detectors, detectors with built-in cameras, audio glass break detectors, radar-based intrusion detectors and safe and vault detectors; homeland security and alarm control equipment, namely chemical sensors, gas sensors, radiation detectors, explosives detectors, biological agent detectors and emergency operations center workstations; 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, life safety stations, 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 an 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 handheld computer communication devices