Acoustic coupling devices; Air traffic control radio equipment; Automatic switching apparatus; Batteries; Change-over switches; Computer mouse; Computer network adapters; Computer network hubs, switches and routers; Computer network switches; Computer utility programs; Computers; Decorative covers for smoke detectors; Electric meters; Electric wires; Electronic advertisement boards featuring a neon lamp; Electronic detectors for observing and measuring the infrared spectrum, namely, infrared detectors; Electronic glass break detectors; Electronic timers; Fire and smoke detectors; Fire-fighting equipment, namely, water cannons; Glasses for sports; Goggles for sports; Lights for use on video cameras; Microprocessors; Photovoltaic cells also including a solar thermal collector sold as a unit; Safety sensors, namely, carbon monoxide detectors, smoke detectors, and combination carbon monoxide and smoke detectors; Smoke alarm tester in the nature of a cool burning smoke generator; Smoke alarms; Smoke detectors; Wind indicator, namely, smoke for use in detecting and analyzing air currents