DETRUM RXC9M is a 2.4GHz 9-channel receiver with integrated full-range telemetry. 9 PWM outputs. 1 DATA IN interface, connected to the flight controller or telemetry sensors for transmitting the flight data. 1 PPM/D.Bus output (compatible with S.Bus). By using diversity antenna, it can automatically switch the signals to ensure the stability of the received signal. The RXC9M will set the output according to transmitter’s Fail Safe function when receiver does not receive signal.