General IRTC40 Mode D'emploi page 14

the LCD, at the right of SCAN, and the
temperature of the wall will appear at the
right of REF.
4. Release the trigger. This will cause the
beeper to sound three times and the
terms SCAN and NORMAL to disappear
from the LCD. The reference temperature
will remain on-screen—but only for
1 minute.
5. Within 1 minute of releasing the trigger,
squeeze and hold the trigger again, but
this time while pointing the gun at your
hand. This will cause SCAN to reappear
on the top line. Note that as the laser
pointer hits your hand: 1) the color of
the LCD backlight changes from green
to red; 2) the term HIGH appears on the
top line; and 3) the beeper begins
to sound repeatedly and rapidly
(at 2 beeps/sec). Together, these visual
and audible alarms indicate that your
hand is at least 1°F (0.5°C) warmer than
the wall.
6. While continuing to target your hand,
release the trigger. Doing so will cause
the beeper to sound three times and the
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