Transformer Controller Board Adjustable Time Current Welder Transformer Controller Board Digital Display DIY Battery Accessories Feature: 1. Controller: STM8 industrial control center microcontroller is adopted. Isolate strong and weak current through optocoupler to ensure safe operation. 2. Design: The power line and foot switch line use bolts as quick connection terminals, which is more convenient and reliable. 3 Input time: input time and current adopt high-precision simple potentiometer, which is reliable and convenient for on-board power supply, state, pin, trigger indicator, and working state is clearly visible. 4. Function: reliable zero-crossing detection circuit design ensures SCR phase transfer accuracy. The controller is compatible with 40A scr. The digital control interface can change the current time and current settings. 5. Setting: input time is 1-50, cycle unit (1 cycle is 20 ms), current input (30-99%). Specification: Material: PCB Color: red Current: 40A/100A (optional) 100A thyristor/40A thyristor: ordinary thyristor Transformer: common 1 AC 9V transformer Welding pin: 3 * 100 welding pin aluminum oxide copper Foot switch: EKW-5A-B aluminum foot switc DKJ10-25 connector: European type quick connector cable DKJ10-25 quick connector Red rocker switch: the red rocker switch is fused with the power socket Size: Control panel: 8x6cm/3.15x2.36in Display screen: 4x3.5cm/1.57x1.38in Origin: Mainland China Model Number: Spot Welder Module Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Packages: 1 x motherboard 1 x display board 1 x cable _x000D_