Looks nice, but quite rawArvosana 3/5
It's working, and showing CO₂, humidity, and temperature, which is good. CO₂ values are very clear.
There are some downsides as well:
- No internal battery, so it resets every time you slightly touch the power plug.
- Very cheap oscillator, the time shifts by several minutes each month.
- Don't try to set an alarm. Instead of working, it just resets the device! I guess no one really tested that feature.
Danil