FrSky's X4R receiver features 4 channels plus the new Smart Port so you can plug in telemetry sensors. This new version also includes a CPPM output option.
The FrSky Smart Port Lipo Voltage Sensor plugs into the balance port of your battery pack and allows you to monitor pack voltages while flying. No more guessing about your battery condition.
FrSky's X4R-SB receiver features 3 channels + Sbus plus the new Smart Port so you can plug in telemetry sensors. This new version also includes a CPPM output option.
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