This is a kind of fine quality spot welding machinecontrol panel, which has single-pulse, time and current is adjustable, simple and easy to use. Equipped with digital display, you can see the time and current directly. There are two type 40A or 100A for choose you to choose. You can have a try.Features:This control panel of the spot welding machine is independently developed for the DIY or the simple resistance welding.The principle of silicone controlled phase shifting triggering is adopted to adjust the time and the current to achieve the purpose of welding.Equipped with digital display, you can see the time and current directly, simple and easy to use.Strong and weak electricity is isolated by optocoupler, safer to operate.Using high-precision single-bit potentiometer, to ensure reliable and convenient input.A reliable zero-crossing detection circuit to ensure that the SCR phase shift accurate.There are two type 40A or 100A for choose you to choose according to your demands.Specifications:Name: Spot Welding Machine Control PanelType: 40A, 100A (optional)Item size: 80 x 60 x 20mm or 3.15 x 2.36 x 0.79inItem weight:40A: 60g or 2.12ounce100A: 73g or 2.57ouncePackage size: 130 x 89 x 50mm or 5.12 x 3.50 x 1.97inPackage weight:40A: 82g or 2.89ounce100A: 95g or 3.35ouncePacking List:1 x Spot Welding MachineControl Panel About shlpping: All items will be shlpped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.