4. This control board adopts double-sided welding, integrated into a board with more reasonable component layout, in order to be easier to install on the machine casing. 3. 41A thyristor version can control below 1000W, 100A thyristor version can control below 3000w 2. Single and double pulses are adjustable, spot welding counting, synchronous triggering, power-off saving 1. Digital tube accurate display, encoder (not potentiometer) regulation is more accurate and stable, longer life 5. New foot pedal anti-shake function is added, one spot welding is completed once it collapses, preventing factors such as poor switch contact from causing -spot welding!, Manufacturer: Littimoon