Sonoff air quality monitor
Free but Local pick up only.
I bought this Sonoff indoor air quality monitor ~3 years ago to see what it is capable of but haven't used it since I started building my own particle detectors and though someone might want to have a bit of a play with it.
https://www.woodworkforums.com/attac...4&d=1496014126
It measure 3 levels of dust, numerical output of Temperature & Humidity, and light and sound levels are assessed only qualitatively.
Display is via the EWeLink App on a mobile
Its no longer sold but hey its free!
Some details here Sonoff SC: Indoor Air Quality App Monitoring Home Environment
It really is a bit of a toy and even the website says this!
I don't believe it's suitable for use in a shed for wood dust.
I posted about it a few times see here
https://www.woodworkforums.com/f200/...81#post2026606
It works in conjunction with other Sonoff units to act as an switching device.
I can also briefly show you how it works.
