Electronic air pollution monitoring equipment comprised of air pollution monitors, airborne particle detectors, gas detectors, chemical-hazard detectors, smoke detectors, fire detectors; smoke detection monitors; active fire suppression and extinguishing equipment comprising water sprinklers, water misting systems, chemical clean agents and inert gases, and the sub-systems used to control, actuate and monitor such equipment, namely, actuators, monitors, and suppression release devices; gas detectors, flame detectors and the systems used to control and monitor such equipment; electronically controlled fire alarm systems comprised of computer hardware and software, electronic controls, and input and output devices, namely, fire alarm control panels, environmental monitoring and control panels; electronically controlled fire prevention systems comprising fire-suppressive and fire preventative gas agents and total flooding agents to reduce hypoxic oxygen; electronic devices for use in security and surveillance and for use in the monitoring and control of security systems, namely, cameras, monitors, alarms, digital video and audio recorders, alarm panels, input and output devices, displays, and control panels, software used to control and monitor such apparatus; apparatus for recording or reproducing sounds and images; apparatus for recording, producing, or transmitting of security or surveillance data; voice notification and evacuation alarm equipment and systems comprising amplifiers, speakers, controllers, displays, control panels, paging panels, audio input panels, multiplexes and mixers, and the networks used to allow these devices to intercommunicate data and audio information; amplifiers, namely, voice transmitting apparatus, speakers, microphones, digital amplifiers, electric amplifiers, sound amplifiers, image amplifiers and audio induction loop amplifiers; digital sound processing devices; computer hardware; anti-intrusion alarms and perimeter protection systems; access control equipment and systems comprising card and biometric readers, door control equipment, video and infrared image analysis; passive infrared detectors; electronically operated remote speed sensing apparatus, remote speed recorders and indicators, vehicle traffic data acquisition systems comprised of microwave radar, ultrasonic and passive infrared sensors, vehicle traffic data acquisition apparatus using microwave, ultrasonic and passive infrared sensors, speed checking apparatus for vehicles; vehicle detection, counting and length and height determination system for classification of vehicles, comprised of microwave radar, ultrasonic and passive infrared sensors; detectors for use in traffic management systems and intersection control systems, for detecting vehicles such as bicycles, cars, vans, lorries, trucks and busses; apparatus for remotely metering vehicle speed; parts for the foregoing products; computer hardware and software used to control and monitor all the foregoing equipment and systems