Internet Technology Co., Ltd. Shanxi Chimei briefly intercom History: 1949 patent literature have described the first time a full range walkie symbols Norm Woodland and Bernard Silver invention, before the patent literature has not recorded walkie-talkie technology , radio, nor put into practical application of precedent. Internet Technology Co., Ltd. Shanxi Chi Mei told intercom history: Kermode with a coil with a core receiving the "empty" signal when attracting a switch, receiving the "bar" signal when a small radio, and then release the switch pass circuit. Therefore, the commercial radio, the first walkie-talkie reader noisy. By a series of relay control switch "on" and "off" by the print "of" the number of decisions on the envelope. In this way, radio symbols directly on the letter were sorting. Radio, Shanxi CMO Internet technology, engineering walkie-talkie by Chi Mei Internet Technology Co. Shanxi. Radio, Shanxi CMO Internet technology, engineering intercom Shanxi CMO Internet Technology Co. (www.sxqmhl.com) (www.sxqmhl.com) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Li Chi-ming.