... 220V to 110V transformer voltageBLACK CASE STEP UP&DOWN TRANSFORMER DT-100W~10000W STEP UP & DOWN TRANSFORMER 1. Socket optional 2 ... selector: 110-V-120V-220V-240V.4. Output: 110/220-120/240 volt.5. Suitable for Water Dispenser, Printer Rice Cooker ... , Fan, Fax Machine, Air Machine, Computer.6. DT-10000VA step up&down voltage electrical transformer Model and spec ...