Air quality sensor for CO2 and Radon?

[dproffer (David Proffer)]

I am only familiar with the CO2 half of your monitoring. However in that domain, I searched of a long while to find a reliable sensor and I had to go to a BLE based device to find something that delivered accurate and useful data. For anything dealing with important health monitoring, IMHO you want something that has a vendor that stands behind the device’s measures and unless you are qualified in the health science of the sensors domain, you don’t was a ‘homebrew’ device.

So long winded route to my recommendation, the ARANET4 device. I have two for two plus years and they are very good. Good hunting!

Cheap Zigbee CO2 sensors any good?

The world of sensors and the quality of the data they provide is a real wild west! I’ve spend too much time and money trying to ‘get a good solution’ in many sensor domains, and I am pretty sure I continue to be far from a solution. That said, at my current state (read that as drawer full of devices). For CO2, I am using the Aranet4 bluetooth units, link below. They are pricey, but on my rant, they defend their solutions with at least some research. For temperature and humidity, I have stayed…