Miller KA861609 is a precise control unit designed to enhance gas tungsten arc welding (GTAW) processes. It offers pulsed arc welding capabilities, enabling better weld quality, penetration, and control. With adjustable peak amperage, background amperage, pulses per second, and percent on time, you can fine-tune your welds to achieve optimal results. The unit features a pulser switch for easy activation and deactivation of the pulsing function.