Miller KD540406 is a Pulser Control designed for GTAW-P Welding. It requires a suitable welding power source using a positive reference command signal not to exceed +10 Volts DC and a 14-pin receptacle. This device allows the operator to control pulse waveform with various gases, metals, and joints. It provides control of output (contactor), pulses per second (frequency), peak amperage, % of on time (pulse width), and background amperage. The unit also provides remote peak amperage, remote background amperage, and remote output (contactor) control.