encoder, electronic circuit, pulse generator, signal coupler, printer circuit board, image receiver, electronic detector, signal receiver-transmitter, signal converter, power amplifier, power divider, semi-conductor element, noise filter, electric reading decoder, telephone amplifier, satellite navigation cable, oriented navigation cable, electronic automatic navigator, sorting equal spectrum device, radio calling device, radar navigational receiver, satellite navigational receiver, FM signal generator, satellite low-noise amplifier, satellite electric signal converter, artificial satellite antenna position driver, digital-analog and analog-digital converter, telephone set, code reader, decoder, data processor, telephone recording machine, telephone facsimile machine, image-sound facsimile machine, voice learning machine, telephone intercom, telephone switchboard, electronic switchboard, radio telephone set, mobile phone, facsimile transmitter, telegraph facsimile machine, voice identifier, recording tape copying machine, optical fiber signal receiver, automatic extension switchboard, color image optical fiber signal machine, electronic satellite telecommunication processor, satellite TV signal receiver, radio relay transmitter/receiver, IC, electric shock protector, main wiring support, lightning arrester, connecting box, terminal box, cable lead-in box, testing terminal board, thermal sensing resistance, vehicle motor, wheelchair motor, golf electric car motor, ski vehicle motor, (yacht, motor yacht, sailing boat) motor, electric cart motor, wave feeder, multiplexer, frequency converter