Installation Instructions
Don't point where pets can climb.
DS820i/DS820iT Series
TriTech PIR/Microwave Intrusion Detectors with Pet Immunity
1.0 Description
The DS820i and DS820iT Series are high performance TriTech Passive Infrared (PIR)/Microwave (MW) Intrusion Detectors which use advanced signal
processing to provide outstanding catch performance and unsurpassed false alarm immunity. They are designed to detect movement of a human body in the
interior of a structure as it moves across the Detector’s field of view. When motion is detected, the Detector sends an alarm signal to the control panel. With
Bosch Security Systems Pet Friendly
numerous rodents or flying birds. This pet immunity feature has not been tested by Underwriters Laboratories.
2.0 Specifications
• Input Power: 6 to 15 VDC, 16 mA nominal standby (up to 35 mA
during walk testing and alarm). Use only Limited Power
Source up to 5 A maximum.
• Standby Power: No internal standby battery.
installations, 4 hours (64 mAh) standby power must
be provided
power supply.
• Alarm Relay: Silent operating Normally Closed reed relay. Contacts
rated 3 W, 125 mA, 28 VDC maximum for DC
resistive loads; and protected by a 4.7 Ω, 1/2 W
resistor in the common “C” leg of the relay. Do not
use with capacitive or inductive loads.
• Temperature: The storage and operating temperature range is
-40°F to +120°F (-40°C to +49°C).
installations, the temperature range is +32°F to +120°F
(0°C to +49°C).
3.0 Installation
3.1 Remove the cover using
a small flat-blade
screwdriver.
®
pet immunity, these Detectors will not detect a dog up to 100 pounds (45 kg) or two 60 pound (27 kg) dogs, up to 10 cats,
• Microwave Frequency:
DS820i/820iT: 10.525 GHz (UL Listed)
DS820iTA: 10.687 GHz (Export only, not UL Listed)
DS820iTB: 9.9 GHz (Export only, not UL Listed)
For UL Certificated
by the control unit or by a Listed burglary
For UL Certificated
3.2 Press the vertical adjust tab
toward the side of the base and
lift out the board.
• Coverage: 20 ft. by 20 ft. (6 m by 6 m)
• Tamper: (“T” models only) Normally Closed (with cover on).
Contacts rated at 28 VDC, 125 mA max. Connect
tamper circuit to a 24-hour protection circuit.
• Options: B335 Low Profile Swivel Mount Bracket , B338 Ceiling
Mount Bracket. (The use of brackets is not
recommended for pet applications and may reduce
range and increase dead zone areas).
• Patents: This product is covered by one or more of the
following U.S. patents: #4,660,024, #4,764,755,
#5,077,548, #5,208,567, #5,262,783, #5,450,062,
and #5,670,943.Other patents pending.
3.3 Select a mounting location.
Mount the sensor where an
intruder will most likely cross
through the coverage pattern.
LED ON
3.4 Avoid:
Mounting
Outdoors
Windows
and
Uninsulated
Walls
Optional anti-tamper
screws at each end
Insert screwdriver here or here
Direct Sunlight
Direct Hot or
Cold
Drafts
Moving Objects
Bottom of Detector
7.5-9ft
7.5-9ft
3.5 Observe the Pet Immunity mounting recommendations.
NOTE: The upper areas are
not pet immune.
7.5 -9 ft.
(2.3 - 2.7 m)
Heat
Sources
Air
Conditioning
Outlets
Mount the detector 7.5 to 9 feet
(2.3 to 2.7 meters) above the floo
LED ON
7.5-9ft
7.5-9ft
7.5-9ft
3.5 Mount the detector.
NOTE: To avoid possible circuit board damage, use
only the mounting hardware provided in the
appropriate
punch-out
mounting
holes.
Thinwall knockouts
for wiring
Corner Mount
Surface
Mount
Don't overtighte n the mounting screws
Cover may not att ach correctly
7.5 - 9 ft.
=
(2.3 - 2.7 m)
Remove
Areas
if using the
B335 Bracket
Do not use
the B335
Bracket in
pet
applications
3.6 Wire the detector.
+
Alarm
Contacts
(DS820iT
only)
6-15
VDC
-
Tamper
Contacts
LED
Normally Clos ed co ntacts
NOTE: Use only Limited Power Source
up to 5 A maximum.
3.7 Snap the board into the base so
the notch aligns with the tab.
3.8 Select LED operation.
LED ON
LED ON
3.9 In non-pet applications only, if
look-down is desired, peel away
the look-down mask. Do not
remove the clear plastic lens.
3.10 Microwave range is pre-set. Field
adjustment is not required.
NOTE: If you choose to adjust the range, set
the adjustment as low as possible for
proper catch performance. Be sure to
walk test throughout the coverage
pattern after any adjustment.
INCREASE
Do not use
excessive
force when
adjusting the
microwave
7.5-9ft
7.5-9ft
ON
OFF
LED ON
7.5-9ft
7.5-9ft
Peel away
the mask
pot.
3.11 Walk test the detector. Perform this
test at the time of installation and
annually thereafter.
Green = PIR detect
Yellow = MW detect
Red = Alarm
Microwave
Coverage
PIR
Coverage
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.
Please wait 2 minutes after initial power-up
to perform any walk tests.
5.0 FCC Notice
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
1) This device may not cause harmful interference.
2) This device must accept any interference, including interference that may cause undesired operation.
Changes or modifications not expressly approved by Bosch Security Systems can void the user’s authority to operate the equipment.
Bosch Security Systems
Fairport, New York, USA 14450-9199
Customer Service: (800) 289-0096; Technical Support: (888) 886-6189
4.0 Coverage Patterns
0
10
0
10
Meters
1
11
10
2
10
0
.5
0
6
0
Look
Down
Feet
6777
5666
10
45-5534-
44
3
4
5
6
7
Microwave
Coverage
PIR
Coverage
1234567891011
Although generally not
required, the lens
diagram shows the
appropriate areas to
be masked. Use an
opaque material (such
as, electrical tape) to
8
9
12 22
23 33
34 44
45 55
56 66
67 77
mask the desired
areas.
DS820i Lens
200Feet
(inside view)
© 2003 Bosch Security Systems
DS820i/DS820iT Series Installation Instructions
P/N: 38055K 12/03 Page 2
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LED ON
7.5-9ft
7.5-9ft
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