Hi Wolfrel,
Thank you for the response. The device eui 000000008200014E. It is conneted to a private server. You are correct 5000 is an upper boundary of the device’s CO2 sensor range. I did contact RAdu about this matter. Interestegly, the CO2 sensor crrrected itself after about 40 hr. The readings are quite in line with expected – 400-700 range. HAve you ever experianced anything like this? I