It has been a great ally in my work. I'm a driver, I transport liquid chemicals, and it has been a great help in understanding the environments of factories and places I pass through and how this affects the interior of the truck, thus helping me adapt the way I approach the truck's climate control. And it has been quite insightful in detecting contaminated environments.
I think the only thing they could improve is the registration history, both in the app's graphs and in Excel, with shorter intervals like 15 minutes or 30 minutes.

Excellent device really keeps track of what I need. Id like to understand exactly what the TVOC is measuring a bit better and what the 0-100 scale might translate to in ppm or ug/m3

Very special and easy use