The motor drive will add right ascension (RA) tracking capabilities to any Celestron AstroMaster or PowerSeeker equatorial telescope, or any set-up that uses a Celestron CG-2 or CG-3 equatorial mount. It compensates for the Earth's rotation, so the telescope tracks a star's movement through the night sky form east to west. To keep an object for long periods of time, it is better to make the telescope properly polar aligned and attached the RA drive, then just make occasional adjustments in declination (Dec).
It runs on a 9V battery so there are no cords to get in the way. You can use the drive in either the Northern or Southern Hemisphere. To change hemispheres (reverse the motor’s direction), simply flip the North/South (N/S) switch on the face of the motor drive. It is also simple to change the speed of the motor. A “Speed Rate Regulator” knob is located just under the power indicator, and can be turned in either direction to slow down or speed up the motor. Since solar system objects like the Sun and, Moon move through the sky at different rates than deep-sky objects do, this gives you the ability to match the motor’s speed to the particular type of object you are observing.