ZHENGXI Voltage Converter 220 to 110 Step Down Transformer 500W Adapter , No Noise , Ten Protection Functions , CE & CQC Certified

Q: Does this converts 50hz to 60hz as well?

Support 50HZ and 60HZ, but do not support the conversion of 50HZ to 60HZ

Q: I have a european (italian) appliance that is 220-240v rated, 50hz, 1.7amps, and .33kw....is the 2000w step-up converter sufficient?

Yes,this 2000W transformer is enough

Q: Any chance this is a pure sin wave?

It is a transformer (not an inverter); if the input is a pure wave, then the output will be a good approximation to a pure sine wave. Of course, mains power supply is rarely a pure sine wave.

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電圧コンバーター 220~110 ステップダウントランス 500W アダプター、ノイズなし、10の保護機能、コーヒーマシン、炊飯器、その他のヨーロッパで使用される米国の家電製品に最適

Key Power Step Down 220V to 110V Voltage Converter & International Travel Adapter - [Use for USA appliances Overseas in Europe, Australia, UK, Ireland, Spain, Germany, India, France and More]