- The bidirectional two-ways model means the receiver can get the video+data and send out control data to the transmitter. The unidirectional one-way model means the receiver can get the video + data only, and can not send out the control data to the transmitter.
- Control data includes the control of the UAV and PTZ camera.
- The bidirectional two-way model also supports the receiver to broadcast or play the audio to the transmitter’s speaker. It means supporting two-way audio communication.
