[fotta]

I think that really depends on the environment it’s deployed in. I used to live in a poorly ventilated former warehouse apartment with a mini split for HVAC and at night my levels were around 700. I live in a much better ventilated apartment now and it’s made a noticeable difference in QoL.

[_zoltan_]

700 is great, I see spikes up to 5000 in one of our rooms.

[ctenb]

levels in the range 400-1000 are considered good quality

[dzhiurgis]

700 is pretty good, what are you on about?

[atoav]

If your sensor recalibratws to a baseline of 400 each day and you have a baseline of 700 that is a drift of 300 ppm per day or ca 100 000 ppm per year.

You see why this is a problem?

[bialpio]

It's not going to drift by 300ppm per day - it'll pick the lowest value it saw and assume it was 400ppm. If that happens to be 700ppm every day, then it'll be wrong by 300ppm every day.