c) LCD display
17
16
26
25
24
23
22
18
19
20
21
16 CO2/RH/TEMP chart
17 Max chart reading
18 Min chart reading
19 RH reading
20 Temperature reading
21 Main menu
22 Plant mode
23 Human mode
24 Audible alarm On/Off
25 CO2 reading
26 Time per division,
indicating the period
covered in the chart
32