Digital Proportional Integral Derivative Controller can effectively calculate an error value and the difference between a measured process variable and a desired set point. The Controller can select universal input at site and ensures auto tuning PID operation. The Controller is available in several sizes such as 48 X 48, 48 X 96, 96 X 48, 72 X 72, 96 X 96mm. Digital Proportional Integral Derivative Controller is based on two outputs with three alarm functions.