Function
Press
CALI
Before calibration, run this unit for at least 20 minutes with windows open or in an outdoor environment
with a portable outdoors with a portable battery source to reach an atmosphere of 400 ppm CO2.
Wait until CO2 reading is stable, then follow the above steps for calibration. Leave the
unit for 10 minutes after calibration for normal operation.
Press
ºC / ºF
Use this function to switch between Celcius (ºC) and Fahrenheit (ºF) for the temperature display.
Press for 3 seconds
to hear the buzzing sound
(CO2 level display)
Press
Press
Description
Temperature display
12
Main menu
to close
Press
Press
Press
Manual EN