Signal: PPM Output
Compatible with Frsky X9D remote controller (D8 mode), XJT(D8 mode), DFT, DJT, DHT
-PPM Output (4CH receiver still outputs the full 8-channel ppm)
-Connect 1-3 signal, 4-channel will convert to PPM output, can be used to connecting flight control, wireless simulation or , or Wi-coach.
-Fail-safe protection, only support third channel protection.