This paragraph Module Specifications: length 4.2mm, width 3.6mm, high 2.3 mmDoes not use for the following appliances:First; can not be used for the iron core of the transformer!Second: also can't use On a non-electronic products;Third: This product is a high-frequency current, the ordinary multimeter can't test voltage.If you want to get more output power , you can Paralleled 5 pcs this power board, you could get about 120-200W output power.