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5.
Setting the detection area:
The IR-3000 comes with a user modiable mask on
the lens (gure 4) to adjust the width of the de-
tection area from approximately 16
˚
to 100
˚
. The
mask comes in two pieces, and ts into the slots
above & below the lens cover. Each half of the
mask is perforated and can broken into three sep-
arate strips (gure 4). Each strip of the mask rep-
resents approximately 16
˚
of viewing angle. The
user breaks o the appropriate number of strips to
provide the required viewing angle. For example,
to monitor a 48
˚
angle (gure 5), break o three
strips from the mask (3 x 16
˚
= 48
˚
).
NOTE: The two halves of the mask do not need to
be symmetrical, a dierent number of strips can be
broken o either side.
Frequency: 433.92 MHz
Operating range: -30˚F to 110˚F
Battery life: 6-12 months
gure 4