Please check the position of the switch on the bottom of the adapter before use, otherwise you will make a mistake
(1) Cuando se utiliza en China
The lower switch should be set to AC220V: This corresponds to an input voltage of 220 V and an output voltage of 110 V.
(2) When used in Canada, Brazil, Japan, the United States and Taiwan.
The lower switch must be set to AC110V: This corresponds to an input voltage of 110 V and an output voltage of 220 V.
(3) Before you buy this product, please make sure that the power of the product is less than 30W; and when you use this product, the bottom switch should be adjusted according to the product description, and no error can be made.