There is a range of these available, so make sure you order the correct one:
There are two types of connections for wheels.
Older wheels are connected to a Rotator with a spindle and all new Wheels are attached with a magnet.
All NEW Projectors and Rotators have Active Gate connection; which means that they work by just sliding the Rotator into the Gate of the Projector with no additional plug in cable.
½ RPM Active Gate Wheel Rotator, for most uses. Shows clear movement of projected images.
Variable speed Active Gate Rotator, Allows you to control the speed and direction of rotation of the Wheel; from 1 revolution in 30 minutes up to 12 revolutions per minute.