YI Action Gimbal - How to Use the Gimbal - Camera Installation and Power; Camera Mounting Procedure; Gimbal Power On;Off

Carefully place the camera in the containing bracket, align
the securing bracket with the screws, then tighten.
Attention: Secure the camera before turning on the gimbal.
3) Insert the camera
Power Button
Press and hold the power button for 3 seconds to turn
on/off the gimbal.
4) Power on and off