[12 volt to 24 volt Transformer ] This step-up transformer 12V to 24V converts the DC 12V into DC 24V. Low power consumption. Voltage input: DC 9-20V, output: DC 24V. Max Current: 10A 240W. WARNING: 1.Please confirm whether the output voltage is correct before use; 2.Please confirm the positive and negative polarity of the power before wiring; 3.Must connect the input negative wire to GND or - before use, or the output volts will not change! [With Fuse & More Safer] For the safety of users, our DC Converter are equipped with fuses. When the voltage is too high, the current exceeds(35A), the circuit breaks down or is abnormal, the fuse will blow and the transformer will stop working, thereby protecting the electrical appliances. In addition, this can reduce the risk of fire or explosion. High conversion rate over 96%, output correctly. High quality and performance more durable, longer service life. [IP67 Waterproof Grade] This DC DC converter adopted heat conduction organic silica