Amprobe IR-750 Infrared-Thermometer - Manual (Page 10)

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The thermometer features an auto off function that automatically powers
down the thermometer after 8 seconds of inactivity. To turn the thermometer
on, pull the trigger.
Rotary Switch Positions
Button Description
YELLOW
button
Press YELLOW button to toggle between MAX, MIN, DIF,
AVG, HAL, LAL, DATA and T-C options.
When the Thermometer goes into sleep mode, press
MODE to turn the Thermometer ON again and it displays
the last measurement result.
SET
Press to enter set-up mode stepping through Emissivity,
Trigger Lock and Switching °C/°F set-up.
Details refer to the below Emissivity, Trigger Lock and
°C / °F set-up.
Press
to turn the display backlight ON or OFF.
Selectable two level of display backlight to adapt
different lighting conditions.