Futaba R7003SB BiDirectional 2.4GHz FASSTest Rx SBus 2 Receiver FEATURES: Compatible with Futaba Fastest 2.4GHz transmitters One year limited warranty through Hobby Services beginning at date of purchase INCLUDES: Futaba R7003SB Fastest 2.4GHz Receiver with EXT-VOL cable and Instructions REQUIRES: S.BUS2/S.BUS servos