The "N-EM" are a series of emulators that provide the students the required hardware to emulate the most common automatic systems.
The "N-EM" modules are designed to work with the "AE-PLC" units to obtain the fundamental knowledge of PLC programing, PLC management, etc.
"N-EM-CR" represents a reactor control, which emulate the mix of a catalyst, an inert gas and a substance. We can regulate the catalyst and the inert gas flow with valves, and the substance with different pumps. The switches and pushbuttons emulate the level sensors, the temperature sensor, etc.