Alarm installations and alarms; Alarm sensors; Alarms for the detection of inflammable gases; Burglar alarms; Electric sensors; 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, and speakers; Gas detectors for detecting the presence of gas; Gas sensors for measuring gas concentration; Humidity sensor with integrated digital and analog ...