VOLTCRAFT 2383436 Operating Instructions Manual page 36

3 LOG
Press
This function allows the user to see historical data records.
4 CALI
Press
(CO2 Level
display)
36
Press
Press
Press
Press For
3 seconds to hear
buzzer sound
Press
3rd column flashes
(Temperature
display)
Press ,
right 2nd
column flashes
, right 2nd,
(main
interface)