Yeah, gamified air quality on my wife accidentally on installing this. She really wanted to see green on the LEDs. Also drove home the fact that using a gas stove hits the air quality in the house for an hour or two, that's now on the replacement list.

The fact that I can keep using this even if the vendor goes out of business was a major selling point, but also home assistant integration.

I highly recommend these(I have an indoor and outdoor units)