What's in it besides the Gimbal: 3 Allen key, mounting screws, 2 (unfortunately very short) servo patch cable, power supply
The 2D from Walkera is very easy to install, the AUX functions are very good (the manual adjustment of the camera angle from the transmitter). The supplied patch cable are unfortunately too short, since Walkera should def. times rework.
AUX functions: I use only the tilt function, so tilt around the pitch axis. You can on the servo travel at the transmitter of course also limit the angle, ie how far to swivel the Cam (does not make sense, the copter to film from the bottom).
I use this in conjunction with the Gimbal SJ4000. But it is designed for a GoPro. I write because the GoPro is slightly heavier and the controller is adjusted to this cam. I had about 16 g extra weight to the camera platform install, because otherwise an extremely annoying Jello-effect ("floating) cross bar in the video). After that the effect was but disappeared and the Cam delivers very good shots. Since the SJ4000 also somewhat thicker is necessary to raise longer screws for the mounting bracket of the action. But cable ties also work, but is laborious.
The Switch is to adjust the gain and the output power of the two servomotors. This is of course only if the gimbal has electricity and the cam is mounted. Because to the system must naturally hang vertically and the necessary screws and the function button located at the bottom of the control unit, which is bit of a drag, because you have to keep the copter and the entire system "overhead".
Conclusion: There are "only" 4 stars because the cables are too short, the platform "only" on the GoPro is preset and the recruitment and adjustment possibilities are a bit awkward. Also, the description is available in English, which certainly could present problems to one or other :). Anosnsten meets the system's purpose. I would highly recommend it :)!