Features: Upgraded antenna Highly secure and robust link for long distances No crystals or channels needed.No need to change any settings on your radio. No interferance from motors, ignitions or metal to metal friction. Smart Port enabled, realizing two-way full duplex transmission. Description: Item Name: X8R Telemetry Receiver Operating Voltage Range: 4V-10.0V Operating Current: 100mA@5V Operating Range: Greater than1.5km (Full Range) RSSI output: analog voltage output (0~3.3V) Firmware Upgradeable(have USA firmware) Number of Channels: 16CH (1~8ch from conventional channel outputs, 1~16ch from SBUS port, or combine two X8R to become a 16 channels receiver) Material: composite material colour: As shown Package Contents: 1 x receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.