1- Swiss made co2 sensor

2- CO2 accuracy: +/- (50ppm +5% of reading) at 400-2000ppm

3- 4 color indicator for CO2 levels

4- CO2 alert function

5- Past 24 hours CO2 history record

6- Time, date and day of week

7-Available for DCF, MSF, WWVB radio time signal

8- Temperature and humidity display

9- Wall mounted or table stand design