FrSky D4R-II 2.4G 4CH ACCST 27ms Firmware Telemetry Receiver
This D4R-II is a full featured mini sized 4 channel receiver by FrSky.What makes this receiver different the 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.