DC HOUSE Step Up And Down 200W Voltage Converter Transformer AC 110/220V Step Up/Down transformer converts 220 volts down to 110 volts or 110 volts up to 220 volts.Simultaneous 3-mode Output: 5V 2A (USB) / 110V (Standard US outlet) / 220V(Standard US outlet).2 input voltages selectable: 110V/220V All range fuse protection with two spare fuses included. Comes with 1 additional adapter substitute for US to EU.Package Included: 1pc Cream 200w Voltage Converter & 2pcs Spare Fuse & 1 Adapter Substitute for US to EU ATTENTION: for the 100w - 200w freezer and cooler, please choose the 1000W converter or higher power converter.Since thestarting current of freezer is around 8A, itis too high for the converter, which will led to converter's fuse is burned. To Convert 110V to 220V: 1. Make sure the appliance to be plugged in uses fewer watts than the transformer's rating. 2. Insert the voltage tap plug (located on the rear of the transformer) into the pair of holes marked 110V. 3. Plug the transformers power cord into a source of 110 volts. 4. 220 volts will be available at the front panel outlet marked 220 volts when the power switch is turned on. To Convert 220V to 110V: 1. Make sure the appliance to be plugged in uses fewer watts than the transformer's rating. 2. Insert the voltage tap plug (located on the rear of the transformer) into the pair of holes corresponding to the local standard 220 volts. 3.Attach the rund-pin adapter to the transformer's power cord and connect into the source of 22o volts. 4. 110 volts will be available at the front-panel outlet marked 110 voltswhen the power switch is turned on.