Features: It can create a high-frequency, high-voltage alternating current and create electromagnetic wave. DC36-48V working voltage, 1.5-2.5A(48V) working current, and the frequency is approx 15Mhz. It has the function of wireless transmission, you can use it to melt wire and copper wire. The coil can be burned at any-position within the wire range. The primary-coil can wirelessly light 20W tungsten filament lamp up. Totally 8 types for you to choose, you can choose according to your demands. It is a perfect teaching tool to spark students\' interest of science, also can be a fine gift. Use steps/methods: Put the main engine in place and properly connect the main engine and the ignition co-il. Plug it in and the fan on the main machine starts working. Turn on the switch and the indicator light next to the switch and inside the topcoil will light up. Contact the top of the secondary coil with metal as soon as possible to ignite the flame. Safety precautions: Please read the instructions before use, if used improperly, it is may cause scald and electric shock. Do not touching the ignition coil, the top-coil of the main engine and the output pin of the main-engine. Please do not change the parameters at will, and do not power on after disassembly.. When working, there will be certain electromagnetic interference to the surrounding electronic equipment (15MHz is no effect on human body). Not suitable for children to use it.