anti-intrusion alarms and detectors; namely, electrical warning installations and status sensors, photoelectric and infrared barriers, ultrasonic and vibrational emitters and receivers; burglar alarms; signal transmission and display equipment for use by emergency response centers; namely, telephone and radio transmitters and receivers; combustion gas, gas, smoke, aerosol, flame and temperature detectors; fire alarms; fire-fighting equipment; namely, electronic control units for the actuation of automatic dry fire extinguishing and deluge systems; computer software for the operation of anti-intrusion alarms and detectors, burglar alarms, telephone and radio transmitters and receivers, access control units, and electronic control units for automatic fire extinguishing and hazard remediation; access control units; namely, electromagnetically coded and passive entry cards, card reader apparatus, electronic door control and monitoring apparatus for monitoring and controlling building apparatus; alarm and signalling systems comprised of hazard detectors and sensors and electronic control units for the remediation of detected hazards; voltage surge suppressors; emergency warning lamps; and parts therefor