... & Built-In Dual Lithium BatteryEmbedded GPRS/CDMA communication module, easy-operated.Built-in dual lithium battery, ensure ... & Built-In Dual Lithium BatteryEmbedded GPRS/CDMA communication module, easy-operated.Built-in dual lithium battery, ensure ... can be used on URS data transfer station, maximum transmission distance is 50kmTechnique Parameter1, Receiver Component2,Internal UHF Radio Component3 ...