Computer hardware and computer software used in the automation and control of building access and security, lighting, heating, ventilation and air conditioning; audio equipment, namely building intercoms, public address (PA) machine systems consisting of amplifiers, microphones, speakers, room audio detectors, digital audio recorders; Video equipment, namely, video cameras, optical lenses, remote controls for radios, televisions, stereos; electronic sensors for the sensing of audible sound, ultrasonic sound, light, infrared radiation, radio waves, ionizing radiation, chemicals and biological hazards; security equipment, namely, burglar alarm sensors, closed circuit television (CCTV) cameras and controllers, burglar alarm control panels, burglar alarm bells and horns, strobe lights, motion detectors, smoke detectors, electrical door strikes, alarm key pads; automation equipment, namely, HVAC (Heating, ventilation and air conditioning) controllers, controllers to switch industrial and household electrical power outlets, lighting controllers, used to switch lights