AFE	Analog Front End
AT	Transparent mode
API	Application Programming Interface
AQM	Air-quality Monitoring
CRC	Cyclic Redundancy Check
CO	Carbon Monoxide
CO2	Carbone Dioxide
EEPROM	Electrically Erasable Programmable Read-Only Memory
GUI	Graphical User Interface
ID	Identifier
IGBT	Insulated-Gate Bipolar Transistor
IoT	Internet of Things
LabVIEW	Laboratory Virtual Instrument Engineering Workbench
NDIR	Non-Dispersive Infrared
MFC	Mass Flow Controller
mV	milli -Volts
PC	Process Control
PO	Polynomial Order
PPM	Particle Per Million
VI	Virtual Instrument
SD	Secure Digital
SPC	Set Point Concentration
SVD	Single Value Decomposition
SSE	Sum of Squared Error
TF	Transfer Function
SST	Total sum squared