LCD DISPLAY
CO2
Carbon dioxide
CO
Carbon monoxide
TWA
Time weighted average (8 hours)
STEL
Short-term exposure limit (15 minutes weighted average)
HOLD
Freezes current reading on display
MIN/MAX
Minimum/Maximum readings
Low battery indicator
DP
Dew point temperature
TA
Air temperature
WBT
Wet bulb temperature
%RH
Relative humidity
C or F
Celsius/Fahrenheit
CAL
Calibration Mode
REC
Manual/automatic data logging
RECALL
View manually logged data