Legacy 2.0 firmware available here 

Love the compact design of the XM+ but need full telemetry? FrSky listened and released the R-XSR to have the best of both worlds!  The R stands for "Redundant" for its ability to be able to run a slave Rx if that's your thing... 

The FrSky ultra mini receiver R-XSR is the evolution of the popular full range XSR receiver. The R-XSR is a standalone receiver with all the functionality of the full size XSR (including telemetry), but at 1/3 size and weight of XSR receiver. The RXSR also has an integrated diversity with 2x antennas for a solid RC link, and the IPEX connector makes it convenient to replace antennas.

Check out all our RC receivers, and all our FrSky products!

Features

• Ultra mini size and light weight
• Support telemetry and Smart Port enabled
• Full range
• Switchable SBUS/ CPPM signal output
• Supports redundancy function
• IPEX connector, replaceable antennas

Specifications

• Dimension: 16*11*5.4mm (L*W*H)
• Weight: 1.5g
• Number of channels: 16CH (1-16CH from SBUS channel, 1~8CH from CPPM channel)
• Operating Voltage Range: 4~10V
• Firmware Upgradable
• Compatibility: FrSky X Series modules and radios in D16 mode

Includes

• 1x FrSky R-XSR SBUS 2.4GHz Micro Receiver