Precision double controller: The Spot Welder Machine Time Control Board features a digital display for easy reading, with more accurate and stable encoder adjustment and a longer service life than traditional potentiometers. Multi function: The Spot Welder Control Board offers adjustable single and double settings, welding count, synchronous triggering, and poweroff saving. The 41A thyristor version can control a transformer below 1000W. Enhanced design, easy to install: The Spot Welding Machine Control Board uses a doublesided welding design with optimized component layout, making it easier to install in the machine housing. Foot pedal anti shaking function: The foot pedal antishaking feature ensures that each press completes a welding cycle, preventing miswelding due to poor switch contacts or other factors. Typical applications and advantages Battery tab welding and thin metal sheet work: Provides precise timing and reliable triggering for consistent weld quality on Liion battery tabs and similar thin materials. Small production or workshop use: Useful in hobbyist shops or small assemblies where programmable welding count, synchronized triggering, and energysaving poweroff functions improve repeatability and efficiency. Training, testing, and environments: Ideal for demonstrations and practice in learning spot welding control, with clear digital readouts and adjustable settings for various materials and thicknesses.