The board is of high power MOS trigger switch driver module and control board with field-effect tube to adjust the electronic switch. It adopts imported double MOS parallel active output to show lower internal resistence and greater electric current and power. 

MKS MOS25 V1.0 supports high power heated bed, supports maximum current 25A.

Besides it works at 25A under common temperature which satisfies
most devices usage and realizes the control of great power devices in a relaxed way.
What’s more, it can be applied to powerful devices which could be controlled by
output terminal like electric motors and light bulbs to control the speed of motor and the light of bulbs
Certainly, you can apply it to devices which could input PWM for control like LED light belt, DC motor,
Micro pump and solenoid valves or the most common, drive a 3D Printer Heated Bed

Features

The use of imported dual-MOS parallel active output, lower resistance, more current, strong power at room temperature, 15A, 400W, to meet the most use of the equipment
Wide voltage, the perfect support for PWM
Easily control high power devices
Input PWM to achieve motor speed control, lamp brightness control

Package list

High-power MOSFET Trigger Switch Drive Module x1

HOW TO INSTALL IT: https://3dprint.wiki/reprap/electronics/heatbed_mosfet