capacitors, hybrid integrated circuits, [noise suppressors, in the nature of magnetic core types, for AC lines,] printed boards, telephone sets, key telephone systems; namely, combinations of key telephone sets and a control device[; emergency call telephone systems; namely, combinations of key telephone sets, sensors and a control device; automatic emergency reporting devices; namely, combination of emergency sensors and a transmitter, telephone exchanger for private use, facsimile sets; remote-controlled monitoring systems; namely, combination of key telephone sets, a control device and sensors for monitoring point of sale (POS) systems; namely, registering terminals to be connected to a central processing unit and bar code data collection systems; namely, combination of computers, interface boxes, bar code readers, data distribution display units and hand bar code scanners, pen-type bar code scanners, printers and bar code printers, bar code scanners and image scanners]