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-CML" represents a liquids mixing control inside a tank with four feeding pipes. The tank also has a stirring and a heater element. The different switches and pushbuttons emulate the level sensors along the tank.