Usage Tips:DSMX/DSM2 Compatible Receiver for Spektrum DX6I DX7 DX9 F701 2.4GHz 7CH Ultra Long Range PPM DSMX/DSM2 RC Receiver for JR Spektrum DX6I DX7 DX9 Transmitter F701 2.4GHz 7CH Ultra Long Range PPM DSMX/DSM2 RC Receiver for JR Spektrum DX6I DX7 DX9 Transmitter The FSFLY Series receiver uses DSSS-2 and DSSS-X technology, compatible with Spektrum and JR remote control system, including JR12X, 11X, X9503, X9303, Spektrum DX10t, DX8, DX7s, DX7se, DX6i, DX5e etc., with built-in19db amplifier and 2db antenna, the device has a good quality and stable signals even in long distance. Model: F701 Item: DSMX/DSM2 RC Receiver Band: 2.4GHzChannels: 7Modulation: support Digital Spread Modulation X Range: UP TO 1.5-2KMVoltage Range: 3.5?.6VSize: 47x24x14mmWeight: 12g The Advantage (BETTER THAN AR7000):- Use Special 3bdi Antenna Gain Antenna, Amplifier of more than 15db Gain insided.- Stronger anti-interference, further distances( up to 2km). - Support PPM channel, for quadcopter.- Extra Satelite is not needed,more convenient. Package Included: 1x F701 7CH Receiver 1x Bind Plug