Gauger485 is a high level sensors.These sensors would be communicating with each other to have the applications for tank level measurements so that they can have multiple tank or any other measurements shown.A Standard Hyper Text terminal applications is enough for viewing the data we required. Serial character-based output are commonly seen as simple, reliable and more accurate rather than any other 4-20 analog interface structures. They are also having applications and markets where the petrochemical, chemical, food, agriculture's industries, water and waste water all are their infrastructures projects.Actuators and controlling pumps are used as an external , multiple-relay controller.