Alat intercom (intercommunication apparatus), Antenna (Antennas), Kabel listrik (cables, electric), Kawat listrik (wires, electric), Kotak cabang (listrik) (branch boxes [electricity]), Modem-modem (Modems), Papan wesel (switchboards), Peralatan periferal komputer (Computer peripheral devices), Transponder (transponders), Tusuk kontak, sok kontak dan kontak-kontak lain (sambungan listrik) (sockets, plugs and other contacts [electric connections])