The bidirectional FGr4D receiver is equipped with 4 channels and runs the AFHDS3 protocol. Thanks to the two built-in antennas and the compact design, there are numerous possible applications in the smallest of spaces. In addition to the four channels, the receiver also offers 5 functional interfaces that can be configured with different signal types such as i-BUS2, S.BUS, i-BUS and PPM. The FGr4D is also waterproof according to the PPX6 standard.