Alarms for the detection of inflammable gases; Carbon dioxide detectors; Carbon monoxide detectors; Card reading equipment; Computer peripheral equipment; Electric batteries; Electric door chimes; Electronic-based instruments for measuring environmental parameters including humidity, mold, bacteria, air quality and water quality; Radon detectors; Safety sensors, namely, carbon monoxide detectors, smoke detectors, and combination carbon monoxide and smoke detectors; Smoke alarms; Solar panels ...