无线传输速率：250kbps； 无线传输距离 （ Free air ）：300m 数据传输接口：USB接口、RJ45接口、GPRS传输接口、RS232接口、TD-LTE接口、WIFI接口
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本系统方案具有严格的数学推理支撑，而且实际检测结果表明，该方案检测精度高，无线传输距离长。
The system is supported by strict mathematics consequence, furthermore, the practical result indicates that the method provides high precision and the wireless transmitting distance is long.
近距离通信技术需要一个安全的无线数据传输方式，而移动支付对此的要求更为苛刻。
Near Field Communication technology can provide a secure, wireless way to transfer data, and it could be critical for mobile payment.
按照信号传输距离粗略的划分，无线技术可以分为五类。
Wireless technology can be split into five main sorts, roughly ranked by the distance that the signals travel.
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