Acoustic alarms; Cables, electric; Circuit breakers; Electric cables, wires, conductors and connection fittings therefor; Electric plugs; Electric relays; Electrical distribution boxes; 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; Rotating signalling lights; Surveying instruments