Used to select the measurement temperature unit.
Turn on and off the display backlight.
Used to enter in relative mode.
Used to enter in the maximum, minimum, maximum
minus minimum and average reading of recording
mode.
Used to enter in Data Hold mode.
Used to select between dry bulb, wet bulb and dew
point temperature measurement.
Used to select the temperature exhibition between K,
NTC or K-DP.
Used to save the humidity and temperature reading.
Used to read the saved temperatures and humidity`s.
Check the next memorized data. When pressed for
more than 5 seconds clears all the saved data in
memory.
Check the prior memorized data. In MTH-1362W when
pressed for more than 2 seconds activate the PC wire-
less communication.
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