Bosch Security Systems DS720I Users manual

Installation Instructions

[phone] • [phone] • Fax: [phone]

P/N: 43744B 09/00

DS720i Long Range Dual PIR/Microwave

Intrusion Detector

1.0 Description

The DS720i is a long range dual passive infrared (PIR)/microwave
(mW) intrusion detector that utilizes state-of-the-art signal
processing to maximize catch performance and reduce false
alarms.

2.0 Specifications

• Description: DS720i Long Range Dual PIR/Microwave Intrusion
Detector.

• Input Power: 9 to 15 VDC, 32 mA DC nominal @ 12.0 VDC (up
to 60 mA DC during walk testing, stored alarms, or trouble
conditions).

• Standby Power: There is no internal standby battery. Connect to
DC power sources capable of supplying standby power if primary
power fails. 32 mA-H required for each hour of standby time
needed. Four hours (128 mA-H) minimum are required for

Underwriters Laboratories' Certificated installations.

• Alarm Relay: Silent operating Form "C" reed relay. Contacts
rated 3 watts, 125 mA, 28 VDC maximum for DC resistive loads;
and protected by a 4.7 ohm, 1/2 Watt resistor in the common "C"
leg of the relay. Do not use with capacitive or inductive loads.
Alarm relay contacts on terminals 3,4 and 5.

• Tamper: Normally Closed (with cover in place) tamper switch.
Contacts rated at 28 VDC, 125 mA maximum. Tamper contacts
on terminals 6 and 7.

• Trouble: Normally Closed dry contact output on terminals 8 and

9. The contacts are rated at 28 VDC, 125 mA maximum. Open
during trouble condition.

• Operating Temperature: -20° to +120°F (-29° to +49°C). For

U.L. Listed Requirements, the temperature range is +32° to
+120°F (0° to +49°C).

• Microwave Frequencies:

• DS720i: 10.525 GHz

• DS720i-A: 9.9 GHz

• DS720i-B: 10.687 GHz

• Coverage:

Standard Broad: 90 ft. by 70 ft. (27 m by 21 m) (OA90)
Optional Long Range: 120 ft. by 25 ft. (37 m by 8 m) (OA120)
Standard Long Range: 300 ft. by 15 ft. (91 m by 4.6 m) (OA300)

• Options: TC6000 Test Cord and OA120 Optical Module.

• U.S. Patent Numbers: # 4,660,024, # 4,764,755, #5,077,548,
#5,083,106, # 5,208,567, # 5,262,783, and # 5,450,062.

Other patents pending.

• Dimensions: 8.25 in. L x 5 in. W x 5.19 in. H (21 cm L x 13 cm W
x 13.2 cm H)

3.0 Installation Hints

Never install the detector in an environment that causes a constant

alarm in one technology; it should never be left to operate with the
green, yellow or red LED ON.

Point the unit AWAY from outside traffic (e.g. roads, alleys, and
parking lots). Remember: Microwave energy will pass through
glass and most common nonmetallic construction walls.

Point the unit AWAY from glass exposed to the outdoors and objects
that may change temperature rapidly.

Remember: The PIR detector will react to objects rapidly changing
temperature within its field-of-view.

Avoid installations where rotating machines (e.g. ceiling fans) are
normally in operation within the coverage pattern.

If using the anti-mask feature, avoid locations where people or
objects may be moving within 3 ft. (1 m) of the detector.

4.0 Mounting

Select a location that is most likely to intercept an intruder moving
across the coverage pattern (review coverage patterns on page 6).
The recommended mounting height for the 300 ft. x 15 ft. (91 m x

4.6 m) coverage is 10 ft. (3 m). The recommended mounting height
for the 90 ft. x 70 ft. (27 m x 21 m) and 120 ft. x 25 ft. (36.6 m x 8 m)
coverages is 7.5 ft. (2.3 m). The surface should be solid and
vibration-free.

Remove the cover by inserting a flathead screwdriver or other flat
object into the slot at the bottom of the cover, and twist until the
cover snaps free of the front tabs on the base. Lift the cover up and
away to clear the rear base tabs. Do not bend or remove the
microwave antenna located on the front of the permanent reflecting
mirror.

Remove the circuit board from the base by pressing the two circuit
board retainer tabs outward while lifting the circuit board away from
the base.

Select and break away the appropriate thin wall wire entrance and
mounting hole coverings in the base.

Using the base as a template, mark the location of the mounting
holes on the mounting surface, and pre-start the mounting screws.

Route wiring as necessary to the rear of the base and through the
wire entrance, then firmly mount the base to the mounting surface.

Terminal

Strip

Anti-Mask

Transmitter

1 2 3 4 5 6 7 8

Tamper Switch

MIN

MAX

PIR Noise

Voltage

Pins

Microwave

PIR
NV

Noise Voltage

MW
NV

AM

Microwave

MW

DO NOT TOUCH!

Light Pipe

Pins

Antenna

Detection Systems, Inc., 130 Perinton Parkway,
Fairport, New York, USA 14450-9199

Extra

Terminals

Set-up

Switch Bank

Microwave Range

Adjustm ent

Figure 1: Inside View of DS720i

Copyright © 2000 Detection Systems, Inc.
DS720i Installation Guide

DS720i Installation Guide

© 2000 Detection Systems, Inc. All rights reserved.

Page 2

Retainer Tabs

Bracket Wire Entrance

Rear Wire Entrance

Corner Mount Holes (4)

Surface Wire

Entrance

Base

Cover Tabs

Surface Mount

Holes (4)

Figure 2: DS720i Base

Be sure all wiring is unpowered before routing.

The tamper switch's jumper pins determine whether the wall tamper
and bracket tamper features are enabled or disabled. See Figure 5
to set the jumper pins.

Enabled
Disabled

Jumper Pins for

Wall Tamper

Enabled
Disabled

Jumper Pins for
Bracket Tamper

Figure 5: Wall/Bracket Tamper Switch Jumper Pins

Figure 6 shows how to wire the tamper switch's terminals to the
control panel and the DS720i.

B334 Tamper Switch

Return the circuit board to the base by first inserting the bottom of
the circuit board into the cutouts at the bottom of the base, then
snapping the top into place.

3.1 Tamper Switch Installation

The tamper switch is designed to prevent any unauthorized opening
or manipulating of the B334 Mounting Bracket once it has been
mounted. The tamper switch mounts to the inside of the bracket
using the supplied circuit board mount.

Jumper Pins for
Bracket Tamper

Jumper Pins for

Wall Tamper

Wall Tamper

Figure 3: Optional Tamper Switch

Refer to Figure 4 when installing the tamper switch into the B334
Mounting Bracket.

Tamper

Terminal

Block

Bracket Tamper

To Panel Loop

6
7

DS720i

Figure 6: Wiring the Tamper Switch

3.2 B334 Bracket Mounting

Mount the B334 to a standard single gang switch or outlet box
using the supplied screws. If the unit is to be surface mounted, use
the wall screw/anchor assemblies or appropriate alternatives.

Slide the mirror from the black mirror mounting assembly when
feeding the power wiring through the detector base to the terminal
strip if required.

Refer to Figure 7 when mounting the DS720i to the B334 Mounting
Bracket.

Front View of B334

Wire Entrance

Stud Hole For
Ceiling Mounted
Bracket

Stud Hole
(Hidden) For Wall
Mounted Bracket

Mounting Holes (4)

Top View of

B334 Mounting Bracket

Install

Tamper Switch

Here

Fit spring through hole

in back of mounting bracket

Peel double-sided tape

Figure 4: Installing the Tamper Switch

Threaded

B334 Cover

Stud

Screwdriver Notch

Insert

B334 Body

Plug

Hex Nut

Detector Base

Figure 7: Mounting the B334 Bracket

Wiring

Route

Locking
Washer

Curved
Washer