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4
Control Buttons
Installation
and Operation
Power On/Off
Plug in the adaptor and the meter turns on automatically with a
short beep, then displays current CO
2
, temperature, and humidity
readings on the LCD.
Taking a Measurement
The meter measures continuously and updates the LCD every
second. With a significant environmental change, the CO
2
sen-
sor requires 2 minutes, and the RH sensor 10 minutes to re-
spond. Note: Do not hold the meter close to the face because
exhalation affects the CO
2
reading.
Switch Temperature Measurement
Press the Up/DP/WBT key to cycle the temperature display be-
tween air, dew point, and wet bulb temperatures.
MIN, MAX
Press “MIN/MAX
T
“ to switch between the normal, minimum, and