The Veris Industries H-721LC 0-10/20/40A Xducer is a high performance, low cost, digital proportional-integral-derivative (PID) controller for use in industrial automation and control systems. The H-721LC is a compact, low-cost controller that offers high performance and reliability. It is ideal for use in applications where high accuracy and fast response are required, such as machine tool control, robotics, and industrial process control.