Descriptions: This driver board easy to install, high efficiency. just find a transformer, input AC 220 V to test this board, it will output double 12 V (12V-0-12V), you can choose our board driver. Dual 12V transformer need to choose our 12V driver board, you can use them to make an inverter. The output power of the inverter is the actual efficiency of your transformer, but the maximum power must be below or equal to the power of the conductor board (300 for W). It does not mean that our driver board with 1000W transformer can output 1000W, the maximum output is recommended to use the valid range, 300W driver board supports a maximum output of 300W power, 600W driver board 12 V output recommendations with less than 500 for W, 24 V available with 800 for W, but in addition to cooling fan, otherwise it will burn pipe field. Before your shipment have been tested and debugging, 50Hz delivery frequency. Chips: IRS2153D Input voltage: DC12V Applicable Transformers: steel core transformer 220V Variable 12V ~ 0 ~ 12V (if it is not the correct voltage, the output will be wrong, it is not 220V output ,) 12V-0-12V connect circuit board port (A + B), power port (input) connect the battery, you can output AC 220V, radiator height 35mm! Protection: reverse battery for protection, try to use all the power plus the cooling fan, help cooling tube feed good. Specifications: Input voltage: for DC 12V Output voltage: 12V ~ 0 ~ 12V Output power: 300W Size: 8x6.5cm/3.15x2.56" Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! No Retail Package Package Includes: 1 x Driver Board