A remote terminal unit (RTU) is a microprocessor-controlled electronic device that interfaces objects in the physical world to a distributed control system or SCADA (supervisory control and data acquisition) system by transmitting telemetry data to a master system, and by using messages from the master supervisory system to control connected objects.
![afbb39c9049af9bb785da73e2be5c44e](https://torqsys.com/wp-content/uploads/2020/07/afbb39c9049af9bb785da73e2be5c44e.png)
![Distributed-Control-Systems-DCS](https://torqsys.com/wp-content/uploads/2020/07/Distributed-Control-Systems-DCS-1.png)
![Honeywell-RC500-Remote-Terminal-Unit-(RTU)](https://torqsys.com/wp-content/uploads/2020/07/Honeywell-RC500-Remote-Terminal-Unit-RTU.jpg)
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