Use this iOptron GPS Module to upgrade your CEM26 or GEM28 mount or to replace the one that came with your CEM40 or GEM45 mount. It uses a 32-channel receiver to collect information from orbiting satellites and automatically set your geographic coordinates, plus the current date and time—essential information for accurate alignment and tracking that you normally have to enter manually. Included with the module is a straight-wired 6P6C connection cable.