The Channel Master Rotator control unit is designed to work with all Channel Master outdoor rotator drive units (drive unit not included). When the control box is connected to an outdoor drive unit it enables the rotation of an outdoor antenna from an indoor location with a hand-held remote control. The Channel Master control unit has internal memory which will allow the user to auto tune an antenna to rotate to up to 69 pre-programmed positions. The stand alone rotator control unit is perfect for those in need of a replacement control unit for an existing drive unit installation or simply looking to upgrade to the newer style control unit.