Alarm sensors; Alarms for the detection of inflammable gases; Carbon dioxide detectors; Electric door bells; Electric door chimes; Electric sockets; Electric switches; Electrical outlets; Electronic detectors for observing and measuring the infrared spectrum, namely, infrared detectors; Fire alarm and emergency evacuation devices, namely, fire alarm control panels, smoke detectors, heat detectors, alarm pull stations, audible and visible notification appliances, strobes, sirens, bells, horns,...