4 CO210-en-US v1.3 1/21
PC Datalogger Software
The supplied Windows-based PC software and USB cable allow you to set-up the datalogger,
download logged data, and view the logged data graphically or in text format on a PC. The
software and USB driver is also available from the Extech website.
Connect the CO210 to a PC using the supplied USB cable. The USB port is located on the back of
the CO210. Install the software, open it, and refer to the program HELP utility for complete
operational information. Contact Extech support if you have questions or problems.
Alarm Function
The CO210 features an audible (beeper) and visual (flashing fan icon) alarm that warn when the
CO2 concentration exceeds the programmed threshold. There are two alarm thresholds, the
‘POOR’ air quality threshold (that triggers the alarm), and the ‘NORMAL’ air quality threshold
(that cancels the alarm). See the Setup mode to set these threshold settings.
The audible alarm can be manually silenced by pressing any key, or it will automatically stop
when the CO2 reading is no longer in the alarm region (the user can subsequently press and hold
the RESET button to re-activate the alarm, if desired).
If the beeper is manually silenced, it will sound again when readings
move out of, and then back into, the alarm region.
The fan icon continues to flash even when the beeper is manually
silenced. It disappears only when readings are no longer in the alarm
region.
Setup Mode
Long press the SET button to enter the setup mode.
P1.1: Threshold setting for the ‘GOOD’ air quality display icon
When entering the setup mode, P1.0 and ‘CO2’ are displayed. Press the SET button again to
access P1.1 for setting the CO2 upper limit (threshold) for the ‘GOOD’ air quality display icon. The
current set value will appear blinking on the display.
Press the ▲ or ▼ button to increase or decrease the value. Each press adjusts in 100 ppm
increments. The range is 0 to 700 ppm (default is 700 ppm).
When the value has been set, press the SET button to confirm the ‘GOOD’ threshold and move
to P1.2 for setting the ‘NORMAL’ display threshold. Press the ESC button to exit without saving.
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