AQMD [1] has a lot of great information about air quality sensors. Turns out that they're all pretty bad up to the thousand dollar range.
And these are one of the more reliable sensors. Be aware of other sensors that print out a TVOC or even HCHO (formaldehyde) value but really only measure CO2.
As the post discusses, being unable to differentiate between the specific VOCs being detected makes these sensors, IMO, a net negative in home air quality devices. Mine will spike for a long time from opening a single beer or a fart (lol), so it doesn’t provide much information about whether there are concerning chemicals present as well.