BOC Edwards STP-301 Turbo molecular Pump Control Unit W/ Pwr Crd / USED – READ. NOT INCLUDE ACCESSORY OR EXTRA COMPONENTS. INCLUDES WHAT’S IN PICTURES ONLY, NO OTHERS. No less, no more!! CONDITION: USED – IT IS MISSING A BUTTON (RESET BUTTON). UNITS MAY HAVE MINOR SCRATCHES & SCUFFS LOCATED AROUND IT’S BODY. PLEASE SEE PICTURES FOR A MORE DETAILED VIEW OF THE UNITS CONDITIONS. BOC Edwards STP-301 Turbo molecular Pump Control Unit W/ Power Cord / USED. From San Jose California. No return is allowed unless defects are reported with the item. Please contact to inform us of the issue, providing us with PICTURES of the serial number and the defect/issue you are mentioning. We are trying our best to describe our items clearly by demonstrating pictures and using information provided by manufacturers or other online resources. We post feedback for all buyers who have posted feedback for us. Our customers are important to us, if you have any questions about our product please send us a message and we will be happy to assist you in the best way possible!