IF INPUT AC VOLTAGE :AC 110V THEN OUTPUT AC VOLTAGE : AC 220V AUTOMATIC THERMAL FUSE & GLASS FUSE PROTECTION AUTOMATIC THERMAL FUSE IS INSIDE OF THE TRANSFORMER WITCH IS PROTECT THE TRANSFORMER OVER HEAT CAUTION: WHEN THE INPUT VOLTAGE OF YOUR COUNTRY IS NOT AC 110, NO NEED TO PUSH THE SWITCH UNDER THE COVER (CONVERTER IS PRESENT IN AC 220V) Package 1pcs converter + 1 Multiplug ">