NY-D01 Spot Welder Control Board Digital Display High Precision 40A/100A Spot Welder Time Current Controller Board for Spot Welding Description:The silicone-controlled phase shift trigger principle is adopted to adjust the time and current to achieve welding. With the digital display, you can see the time and current directly. The optocoupler isolates strong and weak electricity, making the operation safer. Using high precision single potentiometer to provide reliable and convenient input. The design of the reliable zero passage detection circuit ensures the accuracy of the SCR phase shift. Made of high-quality PCB, the control board is long-lasting. The module is 8cm long, 6cm wide and 2cm high. There are 40A or 100A models for your choice. It was developed for DIY or simple resistance welding. Item Name: Spot Welder Control Board Material: PCBMeager: 8cm x 6cm x 2cm/3.15inx2.36inx0.79in Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Included:1 X Spot Welder Control Board