DS935 LSN Installation Instructions
P/N: 47885F 3/04 Page 3
Installation Instructions
for the DS935LSN
ASIC-Based PIR Intrusion Detector
1.0 Specifications
LSN Supply Voltage:
33 V maximum
LSN Current Consumption:
0.8 mA
Coverage:
Wide Angle Mirror:
11 m by 11 m
Curtain Mirror:
21 m by 3 m
Walking Speeds:
Wide Angle Mirror:
0.2 m/s to 3.0 m/s
Curtain Mirror:
0.2 m/s to 4.0 m/s
Sensitivity:
Standard or Intermediate
Ambient Conditions:
Storage Temperature:
-20°C to +60°C
Operating Temperature:
-10°C to +55°C
Air humidity (EN60721):
<95% rH, non-condensing
Housing Protection
(EN60529, EN50102):
IP41 / IK02
VdS Environment Class:
II
VdS Approval, class B:
G101552
with Curtain Mirror:
G101553
Options:
B338 Ceiling Mount Bracket,
OMLR93-3 Curtain Mirror
NOTE: Misalignment of the detector when using an optional
mounting bracket may reduce range.
2.0 Mounting
aL
S
N
1
aL
SN
2
bL
S
N
1
bLSN2
SP
AR
E
SP
A
R
E
SH
EI
LD
T-Strip
Tamper Switch
LED
Location of major items -
Circuit Board
Securing Screw
Corner
Mounting
Holes (2)
Surface
Mounting
Holes (4)
Bracket Mounting
Hole
Mirror
Tracks (2)
Circuit Board
Retainer Tabs (2)
Rear enclosure and mounting holes
Wiring
Knockouts
Cable Tie/
Strain Relief
Things to Avoid/Remember
Avoid
•
Direct hot and/or cold drafts
•
Windows
•
Small animals
•
Air conditioning outlets
•
Heat sources
•
Direct sunlight
Remember
•
Won’t detect through glass
•
Best catch performance is across the pattern
•
When using two or more detectors, cross the patterns for best coverage
•
Select a location that is most likely to intercept an intruder
moving across the coverage pattern.
•
The recommended mounting height range is 2 m to 2.6 m.
NOTE: The mounting surface should be solid and free of
vibration.
•
Remove the cover by inserting a thin, flat blade screwdriver
into the notch at the bottom of the cover and prying up.
•
Remove the circuit board by pressing a circuit board retainer
tab toward the side of the enclosure and lifting the circuit
board up and out of the enclosure base.
•
Remove the mirror by sliding it out of its tracks.
NOTE: To change the mirror, simply remove the current mirror
and slide the other mirror into the tracks.
•
Open an appropriate wiring knockout and route the wiring
through.
•
For strain relief, attach the cable to the Cable Tie / Strain
Relief with the plastic tie-down supplied.
•
Follow the procedure below for surface mounting, corner
mounting, or bracket mounting.
Surface or Corner Mounting
•
Open two holes for either surface or corner mounting.
•
Using the enclosure as a template, mark the location for the
mounting screws.
NOTE: Depending on the surface, choose appropriate
mounting hardware (e.g., anchors, etc.)
•
Firmly mount the detector.
•
Replace the mirror and circuit board.
Bracket Mounting
•
Mount the bracket to the mounting surface using the mounting
instructions that come with the bracket.
•
Knockout the bracket mounting hole in the enclosure base
and attach the enclosure to the bracket using the mounting
instructions that come with the bracket.
•
Replace the mirror and circuit board.
Select the Vertical Angle
NOTE: The vertical angle adjustment markings are on the
mirror.
•
Determine the appropriate vertical angle for the installation
using the following chart:
Mounting Height
Wide Angle Mirror
Curtain Mirror
2.0 m
-6°
-2°
2.3 m
-8°
-2°
2.6 m
-10°
-4°
•
Slide the mirror forward or backward until the appropriate
angle hash marks are in-line with the marks on each side of
the frame.
NOTE: Excessive handling of the mirror surface may lead to
performance degradation.
-16
-8
0
+2
Mirror
+2
0
-8
-16
+2
0
-8
-16
