Setting Hour
H M
When the number “00" appear
on the LCD, press
SEL./R
button
to increase Hr (01-24). Press
TRH/M
button to save and move to
next setting.
Setting Minute
When the number “00" appear
on the LCD, press
SEL./R
button
to increaser Min. (00-59). Press
TRH/M
button to save and move to
next setting.
H M
c) Alarm setting
After the real date and time is set, the meter will
show “A-on
”
on the top layer of display, press
SEL./R
button to select Alarm on or off. If alarm is on, press
TRH/M
button to save the setting and move to CO
2
alarm setting.
d) CO
2
alarm level setting
The meter shows CO
2
1000 ppm as the default
value on the top layer of display. To change Hi
alarm value by pressing
SEL./R
button to increase
the value. If you pressing the
SEL./R
button, the
number starts from Units digit, Tens digit,
Hundreds digit and then Thousands digit. Press
TRH/M
button to save and return to CO
2
normal
measurement.
Press
SEL
./
R
ppm
CO
2
ppm
CO
2
11