[ optical couplers; Interfaces for computers; Attendance registering machines, namely, radio-frequency identification (RFID) readers, radio frequency identification tag readers, electronic readers and recorders for medical patient identification bands; Radios; Video telephones; Electric monitoring apparatus, namely, wireless controllers to monitor the functioning of other electronic devices; Earphones; ] Video baby monitors; [ Wires, electric; Switches, electric; Electrical plugs and sockets ...