The M6LC650 is a 650 W spot welding power supply manufactured by Thermaltronics. It is suitable for many applications, such as automotive, furniture, shelving, and craft applications. The M6LC650 is a versatile power supply with many features, such as an adjustable output voltage, internal current limit, input overvoltage and short circuit protection, and an adjustable power pulse. The power supply also includes a fuse monitor and an auxiliary output for accessories or welding control. The M6LC650 also has an adjustable welding time, as well as a separate welding/activation start feature. The power supply also features a user friendly LCD display, making it easy to program.