The DJI Transmitter for Inspire 1 Quadcopter is the handheld radio controller used to operate the aircraft as well as control the gimbal. You can use two transmitters with one DJI Inspire, thereby allowing one person to pilot so the second person can concentrate on operating the camera. It features a mini-HDMI port for connecting an FPV monitor, plus there is a USB port for connecting you mobile device when using the DJI GO app.
The transmitter uses a 2.4 GHz band for the control signal, plus there is a 5.8 GHz radio allowing two controllers to be bound together for dual operator flying. In dual operator mode, the "master " transmitter is used by the pilot, while the "slave " transmitter is used by the camera operator to move the camera manually.