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This D4R-II is a full featured mini sized 4 channel receiver by FrSky.What makes this receiver different from the D4FR? The D4R-II's data port allows you to connect a sensor hub so you can connect GPS, Variometer, temperature, RPM and all of the other great FrSky sensors. It also has 2 full length detachable antennas. All of this is available in a package just a little larger then the D4FR.
What's in the Box: