Copyright 2011 VTI-Valtronics Inc.
7
Auto Power Off
The unit will automatically turn off if there has been a 20 minute period of inactivity.
To override this function, press and hold both the SET and HOLD buttons for 2 seconds.
Set-Up
To enter the Set-Up mode from Normal operation, press and hold the SET button for more than 1
second (you should see “AL” in the display window).
CO
2
Alarm
After entering the Set-Up mode (see previous section), press M/AV to set the CO
2
alarm
(note: the CO
2
display will be blinking at the current alarm level). Each press of the MODE button
will increase the value by 100 ppm. Pressing the DP/WBT will decrease the alarm value. The
maximum range of the alarm is 100 to 9900 ppm. When the desired value is reached, press M/AV
to save the setting. To return to Normal operation press CAL/Esc.
Temperature Scale
Enter the Set-Up mode, press the Mode button and then the M/AV button. You should see “Unit”
in the display window and “
°
C” should be flashing. Press the MODE button to change between
“
°
C” and “
°
F”. Press the M/AV button to save the setting (note: to return to Normal operation
press CAL/Esc).
