4. Operation Instructions:
4.1 Power-Up:
Press the
button to turn ON or OFF.
After Self-Test, if the meter detects between 0-3
ppm of CO, the LCD readings start decreasing
from the initial value to zero. The LCD shows
readings when the meter detects more than 3 ppm
of CO.
4.2 Selecting Temperature Units:
When the meter is first powered on, the default
scale setting is set to the Celsius (°C) scale. To
change to Fahrenheit (°F) press the
button.
Press again to revert to Celsius. The next time the
meter is turned on, the scale setting will be the
same as it was when you powered off last time.
4.3 Data-Hold Operation:
The present reading may be held on the display by
pressing the
button. When the hold data is
no longer needed, release the data-hold operation
by pressing the
button again.
When the meter is in the Data Hold mode, the
, and
buttons are disabled.
4.4 SET ALARM Operation:
Press and hold the
button for two seconds
to enter the CO high alarm threshold mode. The
setting range is from 0 to 1000 ppm (default is 35
ppm).
Press the (
) button to increase the value
and press the (
) button to decrease the
value. Release the
button, the CO high alarm
point setting completion.
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