OVERVIEW:FrSky ultra mini receiver R-XSR is the evolution of FrSky full range XSR receiver. The R-XSRis a standalone receiver with all the functions of XSR, in addition, it's almost 1/3 size and 1/3weight of XSR receiver. Moreover, there redundancy function is integrated into this tiny receiverensures the security, and the IPEX connector makes it more convenient for you to replace antennas.SPECIFICATION:Dimension: 16*11*5.4mm (L*W*H)Weight: 1.5gNumber of channels: 16CH (1-16CH from SBUS channel, 1~8CH from CPPM channel)Operating Voltage Range: 4~10VFirmware UpgradableCompatibility: FrSky X Series modules and radios in D16 modeFEATURES:Ultra mini size and light weightSupport telemetry and Smart Port enabledFull rangeSwitchable SBUS/ CPPM signal outputSupports redundancy functionIPEX connector, replaceable antennas Package included:1* FrSky R-XSR receiver