The Lincoln advanced welding Power Wave STT Description: Exceptional Arc Control - Outstanding burnthrough control on thin metal or critical pipe welding; Ultimarc™ - In synergic STT modes, it dynamically and simultaneously controls all heat input parameters together; Modular Design - The module allows easy connection and fast digital communication; Compact Footprint - The module is designed to securely connect directly without taking valuable floor space; Self-Protecting Circuits - The module will protect itself from the excessive transient voltages associated with highly inductive weld circuits.