RSSI (PWM) output;Lighter weight and physically smaller than D8R-II & D6FR;Two selectable failsafe setting options - native failsafe or user programmable failsafe;External analog telemetry port (AD2);SB port is compatible with Futaba S.BUS servos and FrSky SBUS&CPPM compatible servo

• Frsky 3/16CH X Series Dual-way Receiver X4RSB w/Smart Port SBUS

Frsky 3/16CH X Series Dual-way Receiver X4RSB w/Smart Port SBUSFrSky