3D printer parts heating-controller MKS MOS25 V1.0 for heat bed extruder MOS module support big current 25A This is a Heated Bed controller that can control the temperature of any 12V/24V heated bed with a maximum current rating of 25A. Very powerful to withstand higher current than normal ramps or other 3D printer driver. A general add-on heated bed power expansion module for 3D printer Completely solve the hot bed power is too large and the load current issue. Wiring Diagram: Wiring diagram of MKS MOS25 V1.0 with heatbed and board. Note : This module under the premise of normal cooling, found at I (Max) = 25A stable work situation, the process of using the current not exceed 25A