3. 41A thyristor version can control below 1000W, 100A thyristor version can control below 3000w 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. 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!, Weight: 0.45966381627 pounds, Manufacturer: Kueohse