Frsky X4RSB is a telemetry receiver that is in lighter weight and physically smaller than D8R-II & D6FR with RSSI PWM output (0~3.3v) on board. The number of channels is 3\16Ch, and the 1~3 is from conventional channel outputs,1~16ch is from SBUS channel. It is compatible with FrSky X-series Module, Taranis X9D in D16 mode, but is not work with D-series module.
Through improvement, Frsky X4RSB owns better sensitivity and stability, which enables your model to react quickly and perform stably. It supports wider and higher operating temperature range and suitable for all kinds of models. It applies smart ports. The SB port is compatible with Futaba S.BUS servos and FrSky SBUS&CPPM compatible servos. No receiver channel limits (except by those on your transmitter) and prevent mismatched servo-channel connection. Besides, it also has an external Analog Telemetry port.
Furthermore, Frsky X4RSB offers two selectable failsafe setting options. You can use native failsafe on radio side or set failsafe on TFR4SB side according to what you are accustomed to, which can protect your model to a large extend.
