This is an induction heating board module for quenching, annealing and other heat treatment of small parts used by DIY enthusiasts. It's of high quality and exquisite workmanship, and is durable to use. Hands-on skills and relevant knowledge are required to use this module. Features: Can only be used for quenching, annealing and other heat treatment of small parts for DIY enthusiasts, only for short time use, not a professional industrial power module. Selected material, durable to use. Cooling fan provides quick heat dissipation to prolong the service life. High quality and exquisite workmanship makes the positioning holes exactly match with the board. Input voltage: 12V-40V. The power supply used for heating must be large enough. For reference: 12V, current 20A; 24V, current 30A; 36V, current 50A. It depends on practical conditions. Use protected power sources whenever possible. Do not use battery to power. The working voltage should be above 11V, not the voltage when the power supply is unloaded. Hands-on skills and relevant knowledge are required to use this module. 10mm copper tube can be installed on the copper column at the output end; the copper tube (4mm) can be welded to the copper clip and fixed on the copper column; the copper tube (2mm) can be connected to the output terminal. Note: Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Main Color: Black Main Material: PCB + Aluminum + ABS + Copper Working Voltage: 11V Maximum Power: 1000W Input Voltage: 12V-40V (Recommended 24V-36V) Input Current: 50A (for short time use) Power Requirements: 20A at 12V, 30A at 24V, 50A at 36V Item Size: 165 * 112 * 55mm / 6.50 * 4.41 * 2.17in Package Size: 25 * 17 * 6.5cm / 9.84 * 6.69 * 2.56in Package Weight: 813g / 1.79lbs Package List: 1 * Power Module 1 * Copper Coil 4 * Screw 8 * Stud 4 * Connecting Piece