3 ms·
Which 70$ device? I also have one in that range and I don’t trust it.
by therealdrag0 4y ago
Which 70$ device? I also have one in that range and I don’t trust it.
- EVa5I7bHFq9mnYK 4y agoIt's called Dienmern model DM72B, from Aliexpress, I compared its temperature, humidity and CO2 measurements with other devices and found them correct; as for PM2.5, HCHO and TVOC, I didn't calibrate, but they seem reasonable and detect smoke/farts immediately.