Product Review

It stays cool and saves your control board from melting.
The included wire and terminal connectors are a nice touch. This module generally rests on top of the control box or next to the control board.
Features:
Color: Black
Size: 6 x 5 x 3.1cm / 2.36 x 1.97 x 1.22"
Mounting holes: 3.2mm diameter, for M3 screws.
Max Current: 25A (Enhance heat dissipation) safe for prolonged times. ensure active cooling of the heatsink.
This module is based on power MOSFET and will allow PID control of the heated bed (DC-DC Relays usually do not allow this)

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.

Packing Included:
2 x Heated Bed Power Expansion Module
2 x Connection cable for input signal

2x Cable for hot bed
2x Cable for power