TRYACE 2200W Voltage Converter, All-in-One Travel Power Converter Step Down 220V to 110V with 10A Dual Adapter 4-Port USB UK/AU/EU International Plug Converters for Hair Dryer/Straightner/Curling Iron

If you travel in 220-240 v countries， How to use P9 travel adapter converter combo ? 1.For single US voltage (110/120/125/100-120V) devices, please consider to use the Converter mode. For dual voltage (100-240V) devices, please consider to use...