GZAIR CO2 Data Logger Monitor, Wall-Mounted Carbon Dioxide Detector, IAQ CO2 Detector, NDIR Sensor, Temperature and Humidity, 0~5000ppm Range (CO2 Detection Human/Plant Mode)

This is a great little device and worth the money. It is calibrated well and was within the expected range both outside and inside when I tested it. The menu and settings are easy to use, and I like that you have the option to turn off the sounding alarm. It’s small and compact. While the price is higher, it’s worth it for all these features and for the accuracy. Would definitely recommend.

Útil como una medida de prevención más

Nice small unit easy to use. Wish I had bought the one with a battery though. I did rig up a portable battery bank for iphone that works well. No complaints about this unit

Works great, easy to use and navigate trough the menu. the Log is handy to see what happend overtime (only 7 day's). Display has a good read out and medium size letters/characters.

I received an updated unit and I'm very impressed with how it works. The primary monitor for CO2 is fast and I do love the graphing feature that lets me monitor peak over an adjustable time period up to a whole day. This is exactly what I was looking for to monitor peak CO2 in a given room while it's being used. This helps me to adjust airflow through the room when I need it. Both the hygrometer and the thermometer work well enough to make this a single point replacement for multiple meters. Do note that these other sensors are not able to be calibrated (unlike the CO2 sensor) and may have slight errors, but are definitely functional if high levels of accuracy aren't needed here. The touch buttons can be a little clunky, but once you have it setup, you can set it and forget it. For the price and its features I really can't complain