This VariZoom 12-pin Fujinon zoom controller is a great choice. Note that it doesn't come with a mounting clamp.

To use this VariZoom 12 - pin Fujinon zoom controller, simply connect it to your compatible camera equipment. When handling it, be gentle to avoid any damage. As for maintenance, keep it in a dry and clean place. Remember, this unit doesn't have a mounting clamp, so you'll need to get one separately if you want to mount it. Also, don't expose it to extreme temperatures or moisture to ensure its long - term performance.