The Ronin Focus Motor is designed to work with the front dial of the DJI RS 2 and RSC 2 gimbals to control focus, iris, and zoom. It's also compatible with the optional Ronin Focus Wheel when used with the RS 2.
The motor attaches to the gimbal via a single-rod-mount system and connects to the gimbal using a supplied USB cable. A lens gear is included and is adjustable to fit virtually all lenses the gimbal is capable of operating with.