I’m looking for a reasonably priced (inside) air quality sensor WiFi device that is available off the shelf.
It should do CO2 and/or (T)VOC and ideally also PM (2.5 at least).
There’s some DIY projects available but DIY is a no-go for the user group/use case this is targeting
(think of an application as a fresh air warner in a classroom).
The USB stick I’ve been successfully using the past years seems to be no longer on sale.
There’s some devices in the 200+ € range such as the Airthings Wave or Edimax ai-2002/3/4w
but that’s way atop budget. Some 50€ would be okay.
I’ve come across cheap devices called JQ-200 available on ali etc that essentially can do all of this and have WiFi, unfortunately app-only and based on some enforced whacky Chinese cloud.
There’s some works to flash Tasmota on and a Home Assistant integration with their cloud based on rev engineering.
Has anyone tried this with openHAB ?
Any other off-the-shelf suggestion ?