Heated Bed Power Module MOSFET Expansion High Current Load Module With Cable Features: Completely solve the hot bed power is too large and the load current issue Under the premise of normal cooling, it work stable under I(Max)=20A, The current must not exceed 20A while the process working If you need anything greater or equal to 15A this module is a must For example, if your total power usage is 240W and you have 12V power supply, then it means at least 20A is needed (20X12=240W). This high power module helps your 3D printer equipped with the Chitu controller board (capable of max 15A) become even more powerful. With this add-on module to board lead the maximum current up to 25A. This module is based on power MOSFET and will allow PID control of the heated bed (DC-DC Relays usually do not allow this) Specifications: Size: 6 x 5 x 3.1cm / 2.36 x 1.97 x 1.22" Mounting holes: 3.2mm diameter, for M3 screws. Distance betweeen holes: 54*43mm Very powerful MOSFET to withstand higher current than normal RAMPS or other 3D Printer controller can handle Voltage: 12V-24V Maximum current with active cooling: 210A This module is based on power MOSFET and will allow PID control of the heated bed (DC-DC Relays usually do not allow this) Under the premise of normal cooling, it work stable under I(Max)=25A, the current must not exceed 25A while the process working Package includes: (Without retail package) 1 x MOSFET Expansion Module 1 x Cable