The Omron E5EC-PR2ASM-804 is a two-stage differential pressure controller with various features and functions. It is used to control pressure, flow, and position in automated industrial processes. The E5EC-PR2ASM-804 features high accuracy and accuracy control, programmable inputs, and outputs, as well as digital indicators of set points and process values. It also has an alarm output, manual and auto/manual switch, and a variety of other user-friendly functions to make working with pressure, flow, and position easier. The E5EC-PR2ASM-804 is built to withstand harsh environments, making it suitable for demanding applications in water treatment and other industrial processes.