[ Antennas; Anti-theft locks specially adapted to personal electronic devices, namely, laptops, PC tablets; Bar code readers; Bathroom scales; Computer keyboards; Computer monitors; Earphones; ] Electric door bells; [ Flashing safety lights; Galvanic cells; Head-clip cell phone holders; Infrared detectors; Photographic cameras; Portable computers; Range finders for cameras; ] Smoke detectors [ ; Switches, electric ]