The firmware version 3.20 for Duplex EX receivers brings several new features especially for output pins settings. One of them gives the ability to set the digital interface so that it is possible to set serial communication for control of servo channels on one of the outputs of the receivers, while at the same time generating standard servo outputs for connected servos. This setting is especially advantageous in copter models where a serial interface is used for communication between the receiver and the stabilization system that controls the model.
