Spot Welder Module 9-12VAC 100A Time Control Welding Module Digital LCD Spot Welder Double Pulse Encoder

The product works really well overall. However, the rotary switch operates backwards—when selecting options on the screen, you have to rotate the dial counterclockwise, which can be confusing at first. Thankfully, you’ll get used to it. A big plus is that you can save multiple welder settings, making it easy to switch between different nickel thicknesses. It works perfectly with my DIY dual MOT spot welder.

This isn’t a good board. The idea is good, but the implementation is really poor. The controls are very difficult to use and change. Most of the time a key press didn’t do anything. If you are lucky enough to get into the setup it’s next to impossible to change anything. After about 40 minutes fighting with it I gave up. I didn’t buy this on Amazon but it’s going back to the vendor who sold it to me.