Got my shop from the Indiegogo campaign. Installation worked well connecting to my 2.4GHz Wifi through IOS. I positioned my sensor in the master bedroom.
Initially CO2 values were way out, but after a couple of days the unit corrected this, assuming the lowest measured CO2 value is 400 as this is the natural amount of CO2in air (auto-calibration).
Temperature measurement is slightly higher than other sensors in the same room. With two months in use, the unit works well and I have changed my habit of closing the bedroom door to leaving it open to allow CO2 levels to stay acceptable. I also found VOC levels to go high which I think is caused by the IKEA cabinet wall. One can still smell the "wood" of that cabinet although its in place for over 8 years. With bedroom windows open, one can see pm2.5 values rising with traffic in the street, or in the evening when the wood pellet heaters are being used.
All in all, interesting to know ones living environment better although most of the time it is not easy to change it.
The app works well, but the notification history (value over warning/alarm setpoint) cannot be cleared. I hope a future update will solve this.
Bottom Line: Yes, I would recommend this to a friend
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