Check the listing for details. Diamond Series DSR-1000 Automatic Voltage Regulator And Converter Untested. Condition: For parts or not working. Listed at 139.97 USD. The Diamond Series International DSR-1000 Automatic Voltage Regulator and Converter is a versatile product designed to regulate and convert voltage levels for various consumer electronics and power needs. With input voltage ranges of 120V, 240V, 220V, and 110V, this device offers step-up and step-down voltage conversion capabilities to ensure compatibility and optimal performance for a wide range of devices. As a product of International brand, it is reliable and efficient in efficiently managing voltage levels for a variety of applications. The plug is European style with the 2 round prongs. That’s why it is untested. It appears to be in good condition. There is some residue on top from stickers.