Extech Instruments MO300 User Manual page 6

Infrared Temperature Measurements
1. Press the power button to turn the meter on.
2. Press the IRT button to enable the IR thermometer and the laser pointer. The laser pointer
icon will flash while the mode is active.
3. Press the ▲or ▼button to change the temperature units
4. Aim the laser pointer at the surface to be measured and read the surface temperature in
the secondary display.
5. Release the IRT button. The last temperature measured and the laser icon will remain on
the display for approximately 10 seconds before returning to ambient temperature
measurement.
IRT MAX MIN display:
The meter can be set to display only the maximum or minimum temperature measured during
an IR scan.
1. With the meter in the IR hold mode, press the MODE button. "MIN" will appear in the
display.
2. Press the IRT button to enable the IR thermometer. The meter will display the minimum
temperature measured and will update only when a lower temperature is measured.
3. Press the MODE button twice to enable the MAX mode and proceed as stated above for
the maximum temperature.
4. The MAX or MIN temperature is not stored when the function is exited. The unit
automatically exits MAX/MIN mode after approximately 10 seconds.
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EXTECH INSTRUMENTS
MO300-EN v1.3 5/14