Perfect Prime CO2000 - Modify Settings

2
show the CO2 concentration, temperature and humidity,
III. Modify Settings
1. At Main Display mode, press MODE key to access CO2
concentration alarm.
2. Press MODE twice to access Date screens.
3. Press MODE 3 times to access Time setting screens.
MODE(Press for 2 sec) -> CO2 Concentration -> Date -> Time
4. At each setting screen, press LEFT or RIGHT key to select
the digit to be adjusted.
5. Press UP or DOWN key to adjust the data digit.
6. Press MODE key to access the next setting screen, or the
Main Display mode.