1. This tapless mini board ZVS finished board, without high voltage package, cooling fan, etc. 2. This kit requires a certain amount of hands-on ability and related knowledge. 3. The maximum power is 120W (when 12V induction heating). When pushing the high voltage package 12V, the primary 5 + 5 turns, about 30W. 4. The input voltage is 12V, this voltage range is the voltage when working, not the voltage when the power supply is no-load! (Note: Normal operation is not guaranteed if the voltage exceeds 12V or below 5V, and the input voltage is not within this range) Do not use batteries, battery power supply! Do not use dry batteries! It is recommended to use an excellent quality switching power supply. Model: Mini ZVS Processor speed: 50HZ Power supply current: 10A Power supply voltage: 12V Power: 120W Purpose: high frequency induction heating size:about 8x4cm Material:abs+metal colour:As Shown Package Contents: 3 x Induction Heating Board Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.