with 41ASCR Can adjust spot welding time and spot welding current, range 0.02-1s, current 40% - 100%, positive left knob adjusting time, right knob adjusting current. For safety reasons, adjust the current knob for customizationPlastic handle potentiometerThe potentiometer has a slight torque. The foot switch connection is isolated from the market, even if the contact is safe. The foot switch can only be welded once time, and the second spot welding needs to be loosened and stepped . Increase the anti shake circuit to prevent incorrect spot welding when the switch contacts shake when the pedal switch is . Turn on the indicator and turn it on. Our uses core components, not cheap core. The plate should be added to tin at high current to output. After making the spot welder, the will not affect the in the home. Colour: green Material: plastic, metal Package Contents: 1 * Spot Welding Machine Control Board Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.