Electrical apparatus and instruments, namely, switches, particularly electric switches, differential switches, switch disconnectors and electronic switches; triggers for electric switchgear; circuit breakers, particularly electrical circuit breakers and differential circuit-breakers; commutators; [ telerupters; ] electricity limiters; electric relays; electric contactors; transformers; electrical energy meters; pulse counters; time meters; time switches; [ light-sensitive switches equipped with photoelectric sensors; electronic detectors for detecting the presence of people and objects inside and adjacent to buildings; ] remote control regulators for measuring and controlling room and outdoor lighting, speed of electric motors, and electrical power usage; electric regulators for measuring and controlling room and outdoor lighting, temperature, speed of electric motors, and electric power usage; [ room thermostats; electronic probes for use with HVAC applications; electrical ducts; screw covers for electrical apparatus; lightning conductors; ] transmitters, receivers, and aerials for the remote control of electrical apparatus and for the transmission of signals; [ enclosures for electrical equipment, namely, boxes and cabinets for electrical equipment; ] electric control panels; electric switch desks in the nature of automated switchboards; electric relays, namely, differential relays and pilot relays; electric connectors; electricity inverters; electrical load controllers; electrical load controller contactors; electric push-button switches; signal lamps, namely, indicator lights for circuit boards; electronic warning bells; signal bells; luminous warning signaling panels; electric sockets; electric plugs; electric meters for indicating electricity consumption; electric meters; electric relays, namely, time-delay relays; electronic timers; sensors, namely, movement sensors; motion detectors; voltmeters; ammeters; frequency meters; circuit testers; electrical connecting terminals; electrical power distribution blocks; electrical connection combs; electrical power distribution blocks, namely, electricity terminals and covers thereof; electrical switches with rotary control means; [ replacement parts for circuit breakers, namely, manual trip levers; replacement parts for circuit breakers, namely, padlocking devices; ] remote controls for use with lighting, HVAC, security systems, and safety equipment; electrical fuse disconnectors; electrical fuse holders; fuses for electrical currents; electrical insulation testers; voltage surge suppressors; electricity control boards and distribution panels