The A3 and the A3 Pro flight controllers on the DJI Matrice 600/600 PRO feature eight programmable F-ports that can be used for a variety of applications. The ports can provide a PWM signal for various third party devices like camera controllers or servos. These ports can be assigned to different switches on the Remote Controller Channel Expansion Kit
The Matrice 600 Series Remote Controller Channel Expansion Kit is compatible with the Matrice 600 series remote controller and includes eight knobs/switches. More control functions will be available after channel mapping in DJI Assistant 2.