DS940Q
Passive Infrared Detector
Installation Instructions
1.0 Description
The DS940Q is a high performance Passive Infrared (PIR) Motion Detector which uses advanced signal processing to provide outstanding
catch performance and unsurpassed false alarm immunity. It is designed to detect movement in the interior of a structure by sensing the
Infrared energy emitted from the human body as it moves across the detector’s field of view. When motion is detected, the detector sends an
alarm signal to the Control Panel.
2.0 Specifications
• Input Power: 9-15 volts DC
• Current Draw: 12 mA @ 12 VDC standby and alarm
• Standby Power: No internal standby power. For UL Listed Product
Installations, 4 hours (48 mA-h) standby power
must be provided.
• Relay Form “A” Normally Closed (NC) contact set rated
for 125 mA @ 28 volts maximum DC or 18 volts
maximum AC for resistive loads.
• Tamper: Normally Closed (with cover on). Contacts rated
at 28 VDC, 125 mA max. Connect tamper circuit
to a 24-hour protection circuit.
3.0 Installation
3.1 Remove the cover using a
small flat-blade screwdriver.
Bottom of Detector
3.2 Press the vertical adjust tab
toward the side of the case and
lift out the board.
7.5-9ft
• Temperature: -20°F to +120°F (-29°C to +49°C). For UL Listed
Product Installations, the temperature range is
+32°F to +120°F (0°C to +49°C).
• Humidity: 0 - 95% non-condensing.
• Dimensions: 3.75 in. x 2.25 in. x 1.5 in. (HxWxD)
(9.5 cm x 5.7 cm x 3.8 cm)
• Options: B335 Swivel Mount Bracket. Use of this bracket
may decrease the PIR range and increase dead
zones.
• Reading Bosch Security Systems, Inc. Product Date Codes
For Product Date Code information, refer to the Bosch Security
Systems, Inc. Web site at: http://www.boschsecurity.com/
datecodes/
3.3 Select a mounting location.
Mount the sensor where an intruder
will most likely cross through the
coverage pattern.
LED
ON
OFF
Insert screwdriver he re o r he re
3.3 Avoid:
Direct Hot or
Cold
Drafts
Air
Conditioning
Outlets
Windows
and
Uninsulated
Direct Sunlight
Walls
Moving Objects
Heat
Sources
3.4 Position detector at correct height.
Mounting
Outdoors
7.5 -9 ft .
(2.3- 2.7 m)
Pets
Mount the detector 7. 5 - 9 feet
(2.3 - 2.7 meters) above the floor
3.6 Mount the unit, using the appropriate
mounting holes.
Thinwall knockouts
for wiring
Corner Mount
Note: To avoid
possible
circuit board
damage, use
only the
mounting
hardware
provided in
the
appropriate
punch-out
mounting
holes.
3.7 Install the board into the case. Be
sure the vertical adjust tab aligns with
the correct mounting height.
LED
ON
OFF
3.8 Wire the Detector.
9-15
VDC
-
+
Surface
Mount
Remove
Areas
if using th e
B335 Bracket
Don't overtighten the mounting screws
Cover may not attach correctly
3.9 Select LED Operation
LED
7.5-9ft
ON
OFF
ON
ON
OFF
7.5-9ft
7.5-9 ft = 2.3-2.7 m
3.10 If look-down is desired, peel
away the look-down mask. Do
not remove the clear plastic
lens.
LED
ON
OFF
7.5-9ft
Peel away
the mask
7.5-9ft
LED
ON
4.0 Walk test at the time of installation
and annually thereafter.
This detector contains an environmental
stabilization circuit which requires
approximately 2 minutes after initial
power-up to warm up. During this time
the detector will not respond to any
movement.
5.0 Coverage Patterns
012
Meters
20
10
0
10
20
© 2011 Bosch Security Systems, Inc.
130 Perinton Parkway, Fairport, New York 14450
www.boschsecurity.com
1-1112-2223-3334-4445-5556-6667-
Feet
040
10
20 30
77
Please wait 2 minutes after initial power-up to
6
012
10
Meters
perform any walk tests.
3
7.5
0
Feet
040
0
Look
Down
6
1-1112-2223-
Although generally not required, if
masking is desired, the lens diagram
shows the appropriate areas to be
masked (see shaded area on the
DS940Q lens diagram). Use an
opaque material (such as, electrical
tape) to mask the desired areas.
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44
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DS940Q Installation Instructions
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DS940Q Lens
(inside view)
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