Features: 1. This product has a maximum power of 1800W, super PCB layout design and super heat sink, superior heat dissipation effect. 2. 12-48V low voltage DC power supply with a maximum current of 40A. It can work continuously for several hours with good heat dissipation. 3. Can use graphite crucible to melt gold, silver, copper, aluminum and other metals, heating evenly, fast and very convenient. 4. With a cooling fan interface, can also for Tesla discharge, generator voltage inverter, etc. 5. It is recommended not to exceed 48V 35A to prevent accidents and damage. Specification: Input Voltage: 12V-48V (Recommendation: above 36V) Power Requirments: Less than 12V >=10A, More than 15V >=15A Maximum Power: 1800W Maximum Current: 40A Heater Inner Ring: 70mm / 2.8in Size: Approx. 18 x 13 x 8 cm / 7.1 x 5.1 x 3.1in Weight: Approx. 1052g Package Included: 1 x PCB Board 1 x Copper Tube Note: 1. When using a switching power supply, make sure that the power supply voltage is stable before connecting to the induction heating circuit. 2. Do not heat metal that is too large or it may be overloaded. Please add a 35A fuse or ammeter. 3. Although this driver board can withstand more than 40A, it is recommended not to exceed 48V 35A to prevent accidents and damage. 4. The minimum input voltage of the module is 12V, the voltage of 12V must be greater than 10A to use the power supply. 5. If you find that the MOS tube is hot, first consider whether the power output meets the requirements. 6. Do not clear the circuit board, otherwise it will emit a very high frequency of noise, and then the MOS tube will burn out. 7. It is recommended to use a 36V 20A power supply. Below 12V is very dangerous. 8. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. .