good product for healthy environment...

good product for healthy environment...

good product for healthy environment...

Works well, battery life doesn't seem very famous at first, but let's see how it is after several times charging, CO2 display you have to believe, so you have no comparison, temperature and humidity are pretty accurate

Funktioniert gut, Akkulaufzeit scheint anfänglich nicht sehr berühmt, aber mal sehen, wie es nach mehrmaligem Laden ist, CO2 Anzeige muss man glauben, so man keinen Vergleich hat, Temperatur und Luftfeuchtigkeit sind ziemlich genau

Works well, battery life doesn't seem very famous at first, but let's see how it is after several times charging, CO2 display you have to believe, so you have no comparison, temperature and humidity are pretty accurate

product seems good

product seems good

product seems good

Good device, arrived on time

Хороший прибор, пришёл вовремя

Good device, arrived on time

a nice tidy unit. seems to work ok

a nice tidy unit. seems to work ok

a nice tidy unit. seems to work ok

All right, thanks.

All right, thanks.

All right, thanks.

Seems to work as expected. A neat & tidy unit with a bright clear display. The description above is misleading though, the accuracy in the documentation is listed as +/- 50 ppm +/- 5%. A device for the claimed 1ppm accuracy might perhaps start at 100x the cost and need reference calibration. There are published sources for recent atmospheric CO2 levels to compare with if you can get this into a space with clean fresh uncontaminated air, such as https://www.csiro.au/en/research/natural-environment/atmosphere/latest-greenhouse-gas-data/ I've found that you need to be reasonably far away from it to not have your breath affecting it so it does seem to do a reasonable job of CO2 reporting - for a cheap device anyhow. For noting if there's a problem with indoor air currently, this will be useful. Arrived in 4 weeks which is about normal currently.

Seems to work as expected. A neat & tidy unit with a bright clear display. The description above is misleading though, the accuracy in the documentation is listed as +/- 50 ppm +/- 5%. A device for the claimed 1ppm accuracy might perhaps start at 100x the cost and need reference calibration. There are published sources for recent atmospheric CO2 levels to compare with if you can get this into a space with clean fresh uncontaminated air, such as https://www.csiro.au/en/research/natural-environment/atmosphere/latest-greenhouse-gas-data/ I've found that you need to be reasonably far away from it to not have your breath affecting it so it does seem to do a reasonable job of CO2 reporting - for a cheap device anyhow. For noting if there's a problem with indoor air currently, this will be useful. Arrived in 4 weeks which is about normal currently.

Seems to work as expected. A neat & tidy unit with a bright clear display. The description above is misleading though, the accuracy in the documentation is listed as +/- 50 ppm +/- 5%. A device for the claimed 1ppm accuracy might perhaps start at 100x the cost and need reference calibration. There are published sources for recent atmospheric CO2 levels to compare with if you can get this into a space with clean fresh uncontaminated air, such as https://www.csiro.au/en/research/natural-environment/atmosphere/latest-greenhouse-gas-data/ I've found that you need to be reasonably far away from it to not have your breath affecting it so it does seem to do a reasonable job of CO2 reporting - for a cheap device anyhow. For noting if there's a problem with indoor air currently, this will be useful. Arrived in 4 weeks which is about normal currently.