Owner`s manual

4
Notes:
• The sensor’s ability to detect tem-
perature changes decreases
when the reference surface and
an intruder’s body are almost the
same temperature.
• The sensor must be mounted at
least 6.6 feet (2 meters) above the
floor, except when using the pet
lens (see “Selecting the Lens”).
SELECTING THE LENS
The sensor has four different lenses. It
comes with the wide angle lens in-
stalled. If you decide to use another
lens, see “Replacing the Lens.’’
Notes:
• The lens number is marked on the
tab of each lens.
• The wide angle and long distance
lens sets each contain two lenses,
one for long distances and the
other for shorter distances.
• The pet lens does not detect
movement from floor level to
about 18 inches off the floor
(when mounted at the height
specified in the table). Use it to
prevent accidental triggering by
small animals.
• The curtain lens with the reflecting
mirror does not detect movement
to one side, so you can avoid
accidental triggering by curtains
that are blowing.
Use this table to select the proper lens
for the coverage you need.
Lens No. 1
Type Wide An
g
le
Mountin
g
Hei
g
ht
6.6 Feet
(2 Meters)
Zone’s
Covera
g
e
1st Zone
110°
2nd Zone
180°
Lens No. 2
Type Lon
g
Distance
Mountin
g
Hei
g
ht
6.6 Feet
(2 Meters)
Zone’s
Covera
g
e
1st Zone
20°
2nd Zone
110°
49-208A.fm Page 4 Wednesday, August 18, 1999 3:15 PM