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Dip switch #2 allows the installer to choose the relay output of the Crystal.
DIP SWITCH #3
Dip switch #3 is used when 2 Crystals are installed next to each other. By changing dip switch #3, the installer can
change the pulse frequency of the infrared pattern to avoid cross talking between units.
DIP SWITCH #4
For maximum performance of the Crystal, dip switch #4 should be in the OFF position. If dip switch #4 is placed in
the ON position, the sensitivity of the Crystal will be reduced. This should be done if a ghosting problem is
experienced. Also, when dip switch #4 is ON, the Crystal is less likely to detect a heavy rain.
CONFIGURATION – AUTO-LEARN TIME
The Auto Learn Time is the time in which the Crystal will automatically learn any permanent changes in its field of
detection. This time delay begins counting down once a change in the detection zone occurs. If the object is
removed from the zone before the time delay has expired, the Crystal will not save it as part of its memory. During
the auto learn time the Crystal will stay locked on and once the Crystal has learned the object it will resume its
normal function.
The Auto Learn Time is adjusted by changing a jumper located near the plug connector. The Auto Learn Time can
be set either to 1 minute or 10 minutes depending on the position of the jumper.
1 minute =
PATTERN SELECTION
The width of the detection zone is determined by the choice of the front lens. By changing the front lens, the pattern
width can be made narrow (3') or wide (6'). In order to get the narrow pattern; the scored lens must be placed
below the emitter and receiver in the housing. If the wider pattern is desired, the semi-scored lens must be placed
below the emitter and receiver in the housing. See the photos below for more detail.
Narrow Pattern (3 foot width)
Scored Lens
3' W
4" D
PATTERN
75.1033 V1 Feb 2001
10 minutes =
Wide Pattern (6 foot width)
Semi-scored Lens
ROLL SIDE
PATTERN
Page 5 of 7
Please note: Diagrams are
showing a Crystal on an 8' door
opening. (Not to scale)
6' W
4" D
ROLL SIDE
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