Bluetooth card wholesale supplier of Henan, Zhengzhou Bluetooth card wholesale suppliers, wholesale suppliers Shangqiu Bluetooth card

 Bluetooth card wholesale supplier of Henan, Zhengzhou Bluetooth card wholesale suppliers, wholesale suppliers Shangqiu Bluetooth card remote Bluetooth card using RF communications, the Bluetooth card to make long-distance communication speeds as fast as microwave communications, while not as stable as microwave communications and anti-jamming ability, because of the use of infrared technology to locate and code division multiple access, without regard to the issue multiple remote Bluetooth card interfere with each other, 3-5 mW RF power can achieve reliable communication, such a small RF power is entirely within the permissible range of radio control, radio frequency without obtaining permission. Without power RF transmitter, low system cost. Bluetooth card is an active card, with directional orientation combines infrared and radio communication in two ways, both the advantages of both and overcome the two drawbacks. Infrared positioning, rather than infrared communications, electronic documents has good directivity and excellent self-positioning capability to solve the infrared communication is slow, the problem of power consumption