Size:205x167x33.5mm

- CO2 measuring range: 400~5000 PPM

- CO2 level indicator: good (400~700 PPM)/normal(700~1000 PPM)/poor(1000~5000 PPM)

- CO2 monitoring alert

- Temperature range:-9.9°C-50°C

- Humidity range:20%~95%

- Max/min record of CO2, temperature & humidity value

- Time and calendar display, time alarm function

- Power supply: 5V1A adaptor or 3 xAA batteries