①：Record the track of the rail car and camera. The indicator light is on to start recording, and the indicator light is off to stop recording.
②：Play and record the track of the rail car and camera. When the indicator light is on, play begins. When the indicator light is off, play is finished.
③：Start or stop all camera recording.
④：The current camera is recording.
⑤：Stop recording the current camera.
⑥：The location of the camera can be connected to 10 groups of cameras simultaneously.
⑦：Control rail car forward, backward and lift functions.
⑧：The display displays the status and memory capacity of the NDI camera.
⑨：The preset bits of the camera can be used to quickly return the camera to the preset position. There are 9 sets available.
⑩：(SET) Confirm key of the camera preset point. After adjusting the camera position, press this key to confirm the setting.
⑪：(FAST/SLOW) Adjust the speed of the camera and the rail car so that the indicator light comes on fast and the indicator light goes off slowly.
⑫：（FOCUS AUTO）The indicator light can automatically adjust the focal length of the camera.
⑬：(IRIS PRI) Indicator light, aperture priority.
⑭：（SHUTTER PRI）Indicator light, shutter priority.
⑮：(WB AUTO) Indicator light, automatically adjust the white balance.
⑯：（ONE PUSH）One key adjustment white balance.
⑰：（IRIS）Manually adjust the aperture by turning the knob to adjust the aperture.
⑱：(SHUTTER) Adjust the shutter manually. You can adjust the shutter through the knob.
⑲：(FOCUS) Manually adjust the focus, you can use the knob to adjust the focus.
⑳：PTZ controls the left, right, altitude, and elevation of the camera as well as the focal length of the camera (the focal length of the camera can be adjusted by rotating the rocker).
Note: ⑫ ⑬ ⑭ ⑰ ⑱ ⑲ is automatic and manual respectively, in automatic mode, manual knob cannot be used.
