User`s guide

CO250-EU-EN v1.5 12/13

SETUP (alarm limit and temperature scale)

In the normal mode press and hold the

SET

button for more than 1 sec to enter the setup mode.

To exit the setup mode, press the CAL/Esc button when either P1.

0 or P3.0 is displayed.

P1.0 CO

2 ALARM Limit

When entering setup mode, P1.

0 and “AL” are displayed.

Press the M

N/AV button to scroll to P1.1 for setting CO2 alarm threshold. The current CO2 set

value will be blinking.

Press the MODE/▲ button to increase or the DP/WBT/▼ button to decrease the value. Each

press adjusts 100 ppm. The alarm range is from 100 to 9900ppm. When the preferred alarm

value is set, press the M

N/AV button to exit and save the setting or the CAL/Esc button to exit

without saving and return to P1.

P3.0 TEMPERATURE SCALE

Press the MODE/▲ button or the DP/WBT/▼ button in P1.

0 to access P3.0 for setting the

temperature scale.

Press the M

N/AV button to go into P3.1 for setting the temperature units. The currently selected

units (°C or °F) will be blinking in the display. To switch units, press the MODE/▲ button. Press

the M

N/AV button to save the setting or press the CAL/Esc button exit without saving and return

to P3.