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-MB" represents an automatic drinks machine, which emulates the sequence of actions carried out to provide beverage cans automatically. The "N-EM-MB" also emulates the automatic coin machine to pay the beverage cans. The different pushbuttons emulates the coins introduced, the selection of the beverage type, if there is some beverage sold out, etc.