Universal Remote Terminal Unit (uRTU) is a measuring and commanding device for apparatus such as motors and valves. It is designed to be used with a variety of signal detection devices and is capable of increasing or decreasing the amount of Input and output as needed. It can be used for a variety of applications such as surveillance systems, data reading system for control the on-off of the equipment in the factory, and the system for reading various parameters whose data is processed at the host computer.