DUAL-ELEMENT INFRARED MOTION SENSOR
(490-0531)                 Installation               Faxback Doc. # 33467

INSTALLATION

Locating the Sensor

Use the information presented in "COVERAGE" and "AVOIDING FALSE ALARMS"
when selecting a location for the Infrared Motion Sensor.  Proper operation
of the sensor depends primarily upon locating the unit in a suitable
environment and using care when mounting it.

For reliable operation, mount the sensor so that each of its detection
zones terminates on a solid surface such as a wall.  In some cases when
pets are not a problem, you can terminate the zone on the floor by angling
the sensor down.  The surface where the zone terminates is used as a
steady temperature reference for detecting the sudden changes in
temperature evident when an intruder passes through a zone.

NOTE:  Detection capability can be decreased if the reference surface and
       the intruder's body temperature are nearly the same.

Do not locate the sensor:

    Outdoors or in areas that have openings exposed constantly to outside
    elements.

    Where hot or cold air blows directly onto it.

    So that its detection zones are aimed at heating or air conditioning
    vents or ducts, exterior windows or curtains covering windows,
    exterior metal walls, refrigerators or freezer grilles, exposed light
    bulbs, or wood burning stoves.

Mounting the Unit

The mounting bracket included with your Infrared Motion Sensor lets you
mount the sensor on a wall-ceiling corner (A), in a corner between two
walls (B), or on a flat wall (C). The table and illustration below indicate
which screw-holes to use to obtain the desired angle.  (See Faxback Doc.
# 33469, Fig. "B").

Surface                Angle                  Holes

Corner                 Horizontal             C

Corner                 5 degrees down         D

Flat Wall              Horizontal             A

Flat Wall              5 degrees down         B

Ceiling-Wall Corner    Adjustable             E

To mount:

1.  Using the mounting bracket as a template, mark the wall at the location
    of the screw holes.

2.  Drill a 3/16 inch hole at each of the marked locations.

3.  Push the supplied inserts into the holes.

4.  Route the wiring from the central alarm to the mounting location
    (requires a six conductor wire).

5.  Route the wiring through one of the three large openings on the back
    of the bracket.

6.  Using the two long (25mm) screws, secure the mounting bracket to the
    wall.

7.  Remove the outer cover from the sensor.

8.  Route the wires through the opening on the upper right corner of the
    unit.

9.  Secure the sensor to the wall bracket using the supplied 15mm screws.


(BR/EB 6/6/96)