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#1 Best 3D Printer Controllers 25A MOSFET High Power Heated Bed Expansion Power Module MOS Tube Descriptions: √This module is based on power MOSFET and will allow PID control of the heated bed (DC-DC Relays usually do not allow this). √If your total power usage is 240W, and you have a 12V power supply, that means at least 20A (20X12 = 240W) is required. Since the controller board can only set 15A, this setting will not work. To make it work, you need this extra power module. √Under normal cooling conditions, the module found stable operation with I(Max) = 25A, and the current used should not exceed 25A. If you plan to use a heated bed with a 3D printer that uses a 12V power supply, this module is recommended. Specifications: Dimensions: 60*50mm Net Weight: 25g Color:Black Max Current: 25A(Enhance heat dissipation) Package Included: 2*Heat bed Power Module Note: Please double-confirm the wire you connect is right, if there have any issue please contact us before leave negative review and feedback, thanks! Scroll up and Order Now for your 3D Printer Bro!