①Temperature Display
②Humidity Display
③Power ON/OFF Button: Turn the meter power
ON/OFF.
④℃: Factory set ºC. Press to change to ‘ºF’to ‘ºC’.
⑤Dew Point Button: Dew Point Measurement.
⑥’℉: Factory set ºC. Press to change to ‘ºC’ to ‘ºF’.
⑦Temperature MAX/ MIN Button: Press MAX/MIN
button to enter MAX, MIN Recording mode (manual
range only). Select the proper range before selecting
MAX MIN to ensure that the MAX/MIN reading will not
exceed the testing range. Pressing the max/min
button once for Max or twice for Min function.
⑧WBT Button: Wet Bulb Measurement.
⑨Temperature HOLD Button: Press the Hold Button
to enter the hold function. The Temperature reading
will be held when the Data Hold button is pressed.
⑩Backlight Button: Press to backlight on / off
⑪Humidity HOLD Button
⑫Humidity MAX/ MIN Button
⑬Humidity / Air Temperature Probe: Humidity &
Temperature Semiconductor Sensor inside.
5. HUMIDITY AND AIR TEMPERATURE
MEASUREMENTS
1. Hold the probe in the area to be tested & allow adequate
time for readings to stabilise.
2. Press ℉,℃, dew point, WBT Button to enter ℉,℃, dew
point Wet Bulb Measurement
3. Read the Relative Humidity and Air Temperature, dew
point temperature wet bulb temperature.
IMPORTANT NOTE:
Do not immerse the probe into liquid; it is intended for use in air
only.
Warning:
Do not expose the sensor to direct sunlight.
Do not touch or manipulate the sensor.
6. BATTERY REPLACEMENT
If the sign “ ” appears on the LCD display, it indicates
that the battery should be replaced. Open the battery case and
replace the exhausted battery with a new battery.
(1 x 9V battery NEDA1604, 6F22 or equivalent).
