Installation Instructions
for the DS835 Series
TriTech Microwave/PIR Intrusion Detectors
1.0
Specifications
• Dimensions
(HxWxD):
• Input Power:
• Standby Power:
• Alarm Relay:
• Tamper:
5 in. x 2.8 in. x 2.2 in.
(12.7 cm x 7.1 cm x 5.6 cm)
9 to 15 VDC, 16 mA DC nominal (up to 48 mA
DC during walk testing or trouble conditions).
Use only an Approved Limited Power
Source.
No internal standby battery. Standby power
must be provided by an Approved Limited
Power Source. Sixteen mAh required for
each hour of standby time needed.
Silent-operating Normally Closed reed relay.
Contacts rated 3 watts, 125 mA, 28 VDC
maximum for DC resistive loads; and
protected by a 4.7 ohm, ½ watt resistor in the
common "C" leg of the relay. To be connected
to a SELV (Safety Extra-Low Voltage) circuit
only. Do not use with capacitive or inductive
loads.
Normally Closed (with cover on). Contacts
rated at 28 VDC, 125 mA max. To be
connected to a SELV (Safety Extra-Low
Voltage) circuit only. Connect tamper circuit
to a 24-hour protection circuit.
• Temperature Range: -40°F to +120°F (-40°C to +49°C). For UL
Listed requirements, the temperature range
is +32°F to +120°F (0°C to +49°C), indoor
use.
2.0
Installation Considerations
• Never install the detector in an environment that causes an alarm
condition in one technology. Good installations start with the LED
OFF when there is no target motion. It should never be left to operate
with the tricolor LED in a constant or intermittent green, yellow, or
red condition.
• Point the unit away from outside traffic (roads/alleys).
NOTE:
Microwave energy will pass through glass and most
common nonmetallic construction walls.
• Avoid installations where rotating machines (e.g. ceiling fans) are
normally in operation within the coverage pattern. Point the unit away
from glass exposed to the outdoors and objects that may change
temperature rapidly.
NOTE: The PIR detector will react to objects rapidly changing
temperature within its field-of-view.
• Eliminate interference from nearby outside sources.
3.0
Mounting
• Select a location likely to intercept an intruder moving across the
coverage pattern. The surface should be solid and vibration-free.
Mounting height range is 6 to 8 ft. (1.8 to 2.4 m). Recommended
mounting height is 6.5 ft. (2 m).
• Remove the cover. Insert a flathead screwdriver into the locking tab
hole at the bottom front of the detector. Pull the cover up and forward.
Wire
Entrances
Corner Mount
Knockout (4)
Bracket Mount
Knockout
Terminal
Strip
PIR
Sensitivity
Selection Pins
Tri-color
LED
• Microwave Frequency:
DS835:
10.525 GHz (UL Listed)
DS835A:
10.687 GHz (Export only, not UL Listed)
DS835B:
9.9 GHz (Export only, not UL Listed)
• Coverage:
NOTE:
B328 Gimbal Mount Bracket, B335 Low
Profile Swivel Mount Bracket, B338 Ceiling
Mount Bracket
Use of a bracket may reduce range and dead zone areas;
not recommended for installations containing pets.
• Compliance:
Surface Mount
Knockout (2)
LED
On/Off
Pins
35 ft. by 35 ft. (10.7 m by 10.7 m)
• Internal Pointability: +2° to –10° Vertical, ±10° Horizontal.
• Options:
Vertical Adjust
Screw Mount
This device complies with Part 15 of the FCC
Rules and with RSS-210 of Industry and
Science Canada. Operation is subject to the
following two conditions:
On
Look Down Lens
Off
0°
- 4°
- 8°
MIN
Wire
Entrances
Cover Tab and
Locking Screw Hole
Vertical Adjust
Scale
Face of Lens
(masking area)
MAX
MW
Vertical
Adjust
Screw
Microwave
Range Adjust
• Remove the circuit board from the base. Loosen the Vertical Adjust
Screw and slide the circuit board down, then out.
• Break away the appropriate thin-wall wire entrance and mounting hole
coverings in the base.
(1)
This device may not cause harmful interference, and
• Using the base as a template and aligning it so that the detector will be
mounted with the terminal block at the top and the PIR lens at the
bottom, mark the location of the mounting holes on the mounting
surface. Pre-start the mounting screws.
(2)
This device must accept any interference received, including
interference that may cause undesirable operation.
• Route wiring as necessary. Route to the rear of the base and through
the wire entrance. Make sure all wiring is unpowered before routing.
Changes or modifications not expressly approved by Bosch Security
Systems can void the user’s authority to operate the equipment.
• 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/
• Securely attach the base to the mounting surface.
• Return the circuit board to the base and tighten the Vertical Adjust
Screw.
4.0
Wiring
Only apply power after all connections have been
made and inspected. Do not coil excess wiring inside
detector.
CAUTION
NOTE:
Input power must use only an Approved Limited Power
Source. Alarm and Tamper Contacts to be connected to a
SELV (Safety Extra-Low Voltage) circuit only.
6.0
Feature Selection
6.1
LED On/Off Pins
The ON position allows operation of the tricolor LED. If LED indication
is not desired after setup and walk tests are completed, place in the
OFF position. The OFF position does not prevent the LED from
indicating supervision trouble conditions.
On
Alarm
1
2
3
4
Tamper
5
6
7
Off
6.2
8
– + NC C SP T
T SP
9-15 VDC Alarm
Tamper
Input
Relay
• Terminals 1 (–) & 2 (+): Voltage limits are 9 to 15 VDC. Use no
smaller than #22 AWG (0.8 mm) wire pair between the detector and
the power source.
• Terminals 3 & 4: Alarm relay (reed) contacts rated 3 watts, 125 mA,
28 VDC maximum for DC resistive loads and protected by a 4.7 ohm,
½ watt resistor.
NOTE: Do not use with capacitive or inductive loads.
• Terminals 5 and 8: Spare.
PIR Sensitivity Selection Pins
For selection, place the plug across the pins marked STD for Standard
or INT for Intermediate mode.
INT
STD
Standard Sensitivity: The recommended setting for maximum false
alarm immunity. Tolerates environmental extremes on this setting.
Required setting for Pet Immunity.
Intermediate Sensitivity: The recommended setting for non-pet
applications where an intruder is expected to cover only a small portion
of the protected area. Tolerates normal environments on this setting.
This setting will improve your intruder catch performance.
• Terminals 6 & 7: Tamper contacts rated at 28 VDC, 125 mA.
NOTE: Plug the wire entrance hole with the foam plug provided after all
wiring connections have been made.
7.0
Setup and Walk Tests
Select the vertical starting angle from this chart:
5.0
LED Operation
The detector uses a tricolor LED to indicate the various alarm and
supervision trouble conditions that may exist. See chart below.
LED
CAUSE
Steady red
Unit alarm
Steady yellow
Microwave activation (walk test)
Steady green
PIR activation (walk test)
Flashing red
Warm-up period after power-up
Flashing red (4 pulse sequence)
Replace Unit
If the detector experiences a Microwave or PIR selftest failure, it is in need of replacement.
NOTE:
During walk testing, the LED will light for the first technology
(microwave or PIR) and then light red to indicate a detector
alarm. The LED will not indicate activation of the second
technology by lighting its color.
To adjust the vertical starting angle for the desired mounting height and
range, loosen the vertical adjust screw and slide the board up, to point
the angle down. Note the settings on the vertical adjust scale.
DS835
Mounting
Height
NOTE:
Range
20 ft.
(6 m)
35 ft. (10.7
m)
6.5 ft. (2 m)
-9°
-5°
7.0 ft. (2.3 m)
-10°
-6°
8.0 ft. (2.4 m)
-10°
-7°
The proper vertical angle must be selected for installations
containing pets. See Section 11.0
• Place the LED plug in the ON position and replace the cover.
7.1
Establishing PIR Pattern Coverage
• Turn the Microwave range adjust to minimum.
• Replace the cover and snap it into place. This will close the tamper
switch.
• Wait two minutes minimum after applying power to start walk tests.
NOTE: During the warm-up period, the tricolor LED will flash red until
the unit has stabilized (approximately 1 to 2 minutes) and has
seen no movement for two seconds. When the tricolor LED
stops flashing, the detector is ready to be tested. With no motion
in the protection area, the tricolor LED should be OFF. If the
LED is on, recheck the protection area for disturbances
affecting the microwave or PIR technologies.
Page 2
© 2011 Bosch Security Systems, Inc.
DS835 Series Installation Instructions
• Walk test across the pattern at its farthest edge, then several times
closer to the detector. Start walking from outside of the intended
protection area, and observe the tricolor LED. The edge of the pattern
is determined by the first green, PIR activation of the LED (or the
first red activation if the yellow microwave LED activates first).
• Walk test from the opposite direction to determine both boundaries.
The center of the pattern should be pointed toward the center of the
intended protection area.
NOTE:
The pattern may be moved ±10° horizontally by rotating the
lens window left or right.
• Slowly bring your arm up and into the pattern to mark the lower boundary
on PIR alarm. Perform this task at 10 to 20 ft. (3 to 6 m) from the unit.
Repeat from above for the upper boundary. The center of the pattern
should not be tilted upward.
NOTE: If the desired coverage cannot be achieved, try angling the
coverage pattern up or down to assure the pattern is not aimed
too high or low. The angle of the PIR pattern may be vertically
positioned between -10° and +2° by loosening the Vertical Adjust
screw and sliding the circuit board up or down. Moving the board
up will angle the pattern downward.
• Tighten the Vertical Adjust screw when positioning is completed.
7.2
Establishing Microwave Coverage
NOTE: It is important to wait one minute after removing/replacing the
cover so the microwave portion of the detector can settle, and
to wait at least ten seconds between the following walk testing
procedures.
• The tricolor LED should be OFF before walk testing.
• Walk test across the pattern at the intended coverage’s farthest end.
Start walking from outside the intended protection area and observe
the tricolor LED. The edge of the microwave pattern is determined by
the first yellow, microwave activation of the LED (or the first red
activation if the green PIR LED activates first).
• If adequate range can not be reached, increase the Microwave Range
Adjust slightly. Continue walk testing (waiting one minute after
removing/replacing the cover) and adjusting the range until the farthest
edge of desired coverage has been accurately placed.
8.0
Supervision Features
The supervision features function as follows:
• PIR/Microwave: The complete circuit operation of these
subsystems is checked approximately every 12 hours. If the PIR or
MW subsystem fails, the tricolor LED will flash red four times per
cycle and the unit should be replaced.
• Default: If the microwave subsystem fails, the detector will default
to PIR technology protection. The PIR signal sensitivity will
automatically change from INT to STD.
9.0
Maintenance
At least once a year, the range and coverage should be verified. To
ensure continual daily operation, the end user should be instructed
to walk through the far end of the coverage pattern. This ensures an
alarm output prior to arming the system.
10.0 Coverage Patterns
The protected coverage area is where the microwave and PIR patterns
overlap.
An optional Look Down lens is located under the detector. This lens
must be unmasked before it is operational. Use caution to remove
the black mask only. Do not attempt to remove the white lens
assembly. The Look Down lens is not recommended for installations
containing pets or small animals. The Look Down zone is shown in
black on the Coverage Pattern drawings.
TOP VIEW
20
4.8
3.2
V
0
Z
• Walk test the unit from all directions to determine all the Microwave
pattern boundaries. Wait at least ten seconds between walk tests.
10
• The tricolor LED should be OFF before walk testing.
• Walk test the unit from all directions to determine the detection
boundaries. A detector alarm is signaled by the first red activation
of the tricolor LED after an initial green or yellow activation.
11.2
5.6
D
4.2
E
O
S
W
2.8
F
1.4
G
0
X
Y
P
U
M
L
1.4
H
T
15
Establishing Detector Coverage
C
R
5
9.6
N
10
5
8
6.4
B
A
15
NOTE: Do not adjust the microwave range higher than required. Doing
so will enable the detector to catch movement outside of the
intended coverage pattern.
7.3
1.6
0
Meters
Q
2.8
I
4.2
J
K
20
5.6
0 Feet 5
10
15
20
SIDE VIEW
1.6
3.2
0
10 Meters
4.8
6.4
25
8
30
9.6
35
11.2
3
6½
0
2
Z V-Y R-U
10
15
20
25
0 Feet 5
Remove masking for Look Down Zone.
DS835 Series Installation Instructions
© 2011 Bosch Security Systems, Inc.
A-M -5°
N-Q
0
30
35
Page 3
10.1 Pattern Masking
The PIR coverage pattern may be masked using masking tape or
electrical tape on the inside of the lens. Always walk test for the desired
coverage after masking.
• Mount where the animals can not come within 6 ft. (1.8 m) of the
detector by climbing on furniture, boxes or other objects.
A BCD E FGH I J K L M
V N R WS O Z P T X U Q Y
Grooved side of
DS835 Lens
• Do not remove the Look Down lens mask.
NOTE:
Masking only eliminates the PIR portion of the coverage and
has no effect on the microwave pattern.
• Don't aim the detector at stairways the animal can climb on.
11.0 Special Instructions for Installations
Containing Pets
The DS835 will provide reasonable protection from nuisance alarms
caused by the following sources:
• One dog up to 100 Lbs. (45 kg)
• Two dogs up to 60 Lbs. each (27 kg each)
• Up to 10 cats
• Adjust the microwave range for the minimum acceptable coverage
for the room in which the detector is installed.
• Multiple small rodents, such as rats
• Random flying birds
To take full advantage of the DS835's Signature Recognition Technology,
the following guidelines should be followed:
OK
MIN
MAX
• Mount the detector 6.5 ft. (2 m) high and adjust the PIR angle to -5°.
NOTE: Pet avoidance is only available when using the lens provided
with the detector and the Look Down lens is masked.
6.5 ft.
(2 m)
• Set the PIR sensitivity for Standard (STD).
INT
STD
© 2011 Bosch Security Systems, Inc.
130 Perinton Parkway, Fairport, New York 14450
www.boschsecurity.com
1/11
DS835 Series Installation Instructions
P/N: F01U068627-12 Page 4
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