FrSky X4R-SB 3/16-channel S.BUS Receiver with Telemetry



FrSky's X4R-SB receiver features 3 PWM outputs (normal servo) and 1 S.Bus port that carries all 16 channels. Plus the exciting new Smart Port and a traditional A2 port are all located on the side port of the receiver. A FrSky FBVS can be connected to the A2 port for simple voltage monitoring. 

Smaller than the X6R, but still packing 16 channels and the new Smart Port that supports the new hubless digital sensors! Or, connect the old hub to use existing analog sensors. 

A common question is what can the S.Bus port do. First off, you can connect it to many flight controllers via a single connection, and now you have access to all 16 channels. S.BUS has lower latency and higher reliability compared to PWM or PPM. Or, you can use something like the FrSky Sbus Decoder, this will allow you to add 4 normal servo outputs (pwm). You can also connect Sbus servos directly to the Sbus line. Just "Y" in as many SBus devices as you need. 


  • Smart Port & S.Bus Port enabled
  • External Analog Telemetry port (AD2)
  • Lighter weight and physically smaller than X8R and X6R
  • Firmware upgradeable
  • Alarm warning on low voltage, poor reception, etc.
  • Dimension: 40*22.5*6mm
  • Weight: 5.8g / 5g (naked)
  • Operating Voltage Range: 4V-10.0V
  • Operating Current: 100mA @ 5v
  • Operating Range: Full Range (>1.5km)
  • Compatible with FrSky 2-way telemetry modules: FrSky X-series Module (XJT etc.) Taranis X9D in D16 mode
*Note: Does not work with D-series module

Category: Radio Receivers

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