The Two-way Radio System developed by FrSky provides an additional return link that would be used for monitoring the Rx’s voltage, temperature, location, speed and so on.
User's instructions manual
Easy to bind and very fast link-up.
Excellent reboot time.
True Diversity with two antennas.
All channels can be programmed with Fail-safe, quickly and easily.
Quick and extremely stable in performance.
Precise and smooth servo response.
Extended range (1.5km-2.5km).
1 x Transmitter Antenna
Compatible with D8R & DF6R receivers in 2 way telemetry Mode.
Compatible with V8 Range Receivers in V8 Mode