Input voltage DC5V-12V(We are not guarantee the module will work when the voltage is over 12V or less than 5V)Maximum power 120W(when 12V eddy-current heating)Ensure all the components welding right,power line connect in right way,than to set up an electric circuit.The width of the heated object is as far as possible between the 1/3~1/2 of the inner diameter of the heating coil, the maximum not more than 2/3 Color:blackMaterial:metalModule dimensions:5.5cm * 4cm * 2 cm(L*W*H)Product Weight: 119gCoil size: length:7.5cmwidth: 2.8cmPackage Included:1 pcs x ZVS heating power supply module1 pcs x heating coilNote: Light 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. Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-54655 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please dont hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it