Features Induction Heating: For the induction heating current is larger, the heating coil is larger. During heating, part of the heat generated by the heated object will be transferred to the heating coil. As time passes, the temperature of the heating coil will increase. Voltage Power: Voltage induction heating board has input voltage DC 5V to 12V. Maximum power 120W (12V induction heating). When the primary 12 and 5 turns about 5W, push the ignition coil 30V. Instructions for Use: The kit requires a certain level of competence and relevant knowledge. If even the iron will not use the power supply and will not have a positive or negative point, it is recommended not to shoot. Make sure all components are soldered correctly and the power cord is not reversed negative then power on． Easy to Operate: Low voltage heating module no tap mini plate ZVS finished board, with no ignition coil and a cooling fan. Widely Used: This induction heating can be used in conjunction with graphite crucibles (not included) for melting gold, silver, copper, aluminum and other metals. It has the characteristics of fast heating and uniform heating. Specification: Item Type: ZVS Low Voltage Heating Module Voltage: 5V to 12V Power: 120W (12V induction heating) Input voltage: DC 5V to 12V Package List:1 x Board1 x Copper Coil Package List 1 x Board 1 x Copper Coil