FrSky ultra mini receiver R-XSR is the evolution of FrSky full range XSR receiver.
The R-XSR is a standalone receiver with all the functions of XSR, in addition, it's almost 1/3 size and 1/3 weight of XSR receiver.
Moreover, there redundancy function is integrated into this tiny receiver ensures the security, and the IPEX connector makes it more convenient for you to replace antennas.