Welcome to our store! This product is a ZVS heating power module, which includes a heating coil. Here are the details: 1. This is a ZVS processed mini circuit board without pins, which does not include the ignition coil and cooling fan. 2. The input voltage ranges from DC 5V to 12V. 3. The maximum power is 120W (12V induction heating). At 12V, pressing the ignition coil primary with 5 + 5 turns will generate approximately 30W. 4. The PCB size is 55mm * 37mm * 1.6mm. 5. When using the heating coil, it is recommended to keep the width of the heated objects between 1/3 to 1/2 of the heating coil's diameter and avoid exceeding two-thirds. 6. For induction heating, it is important to let the current work for five minutes and then cool down. Since the induction heating current is large, the heating coil can become relatively hot. To prevent damage, it is best to directly weld the heating coil to the circuit board. Package includes: 1 x ZVS heating power module 1 x heating coil 100% satisfaction: Our customers are our top priority. If you encounter any problems with the product after receiving it, such as damage or incorrect quantity, please contact the seller immediately. We strive to provide you with satisfactory customer service.