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© 2011 Bosch Security Systems, Inc.

              F01U069268 | 02 | 2011.10 | 

1

en   Installation and Operation Guide

Glass Break Detector

DS1109i

Do Not Adjust

Test Switch

Tamper Switch

Terminal

Block

P2  P3

NC C  T  T

 

1  Speci

fi

 cations

1.1 Coverage

10 ft (3 m) maximum to farthest point of glass being protect-

ed. For glass sizes over 12 in x 12 in (30 cm x 30 cm); types of 

1/4 in (64 mm) Plate, Tempered, Laminated, and Wired glass; 

and 1/8 in (32 mm) Plate glass (DSB).

1.2 Mounting

Directly (or using the supplied bracket) to a ceiling, wall, door 

or window frame.

1.3 Input Power

12 VDC (6 VDC min to 15 VDC max), 23 mA nominal @ 12 VDC 

(29 mA max in the LED Latch mode).

1.4 Standby Power

Connect to power sources capable of supplying standby power 

of 23 mAh for each hr of required standby time. Four hr mini-

mum standby time required for UL Listed Requirements.

1.5 Alarm Relay

Normally Closed (NC/C) reed relay contacts rated 3.5 Watts, 

125 mA @ 28 VDC for DC resistive loads. Protected by a 10 

ohm resistor in the common “C” leg. The contact opens for 3 

sec upon a glassbreak alarm. For a magnetic contact alarm, the 

contacts remain open as long as the magnet is more than 1 - 2 

inches away from the detector.

1.6 Tamper

Normally Closed (NC/C) rated 125 mA @ 28 VDC maximum. 

For UL Listed Requirements, the tamper switch must be con-

nected to a 24 hr protection circuit.

1.7 Operating Temperature

-20° to +120°F (-29° to +49°C). For UL Listed Requirements, 

the temperature range is +32° to +120°F (0° to +49°C).

1.8 Enclosure

ABS high impact plastic. 1.25 in H x 3.75 in W x 0.875 in D (32 

mm H x 95 mm W x 23 mm D).

1.9 Accessories

DS1110i Glass Breakage Tester. mm) Plate glass (DSB).

2  Installation Considerations

NOTICE!

Always pretest the detector’s location using the 

DS1110i Glass Breakage Tester.

Do Not:

Mount the detector on iron or steel surfaces if the mag-

• 

netic contact will be used. Aluminum and stainless stell 

frames are acceptable.

Mount the detector with obstructions between the glass 

• 

being protected and the detector.

Mount closer than 2 ft (61 cm) to heating or cooling out-

• 

lets; mount as far away as possible. If drafts from these 

outlets blow on the detector, select a different location for 

the detector. Use the environmental test (see Section 6) to 

verify good installation locations.

Install alarm contacts on 24 hr protection circuits. 

• 

Figure 3.1: Opposite Wall Mounting Using Door Contact

Figure A

A

any corner of the glass (line A in Figure 3.1).

Mounting Above Glass Doors

Mount the DS1109i at the top of the door frame with 

• 

the Sensor Aperture pointing downward.

Mount the magnet to the top of the door. The magnet 

• 

should be placed so that it aligns with the side of the 

DS1109i. Do not allow the magnet to cover the front of 

the detector. See Figure 3.2.

The detector must be mounted so that the door swings 

• 

outward from the detector. See Figure 3.3.

Door

Door Closed

Door
Frame

Door
Frame

Sensor Aperture

Magnet

DS1109i

DS1109i

Door Open

Figure 3.3: View Looking up from Floor

Top of

Door

Frame

DS1109i

Magnet

Side View

Single Window Coverage Using the Magnetic Contact

Mount the detector where there are no objects be-

• 

tween itself and the glass. 

Make sure the detector is no farther than 10 ft (3 m) 

• 

from the farthest corner of the glass (line A in Figure 

3.4).

Do not mount the unit with the Sensor Aperture facing 

• 

away from the window.

Figure C

Side View

A

A

Window

Frame

Sensor
Aperture

Figure 3.4: Single Window Coverage Using the Magnetic Contact

Ceiling Mounting Without the Magnetic Contact

The recommended location is half the distance be-

• 

tween the glass and the opposite wall or 7 ft (2.1 m) 

whichever is smaller. 

Mount the detector where there are no objects be-

• 

tween the glass and itself.

Make sure the detector is no further than 10 ft (3 m) 

• 

from any corner of the glass (line A in 

fi

 gure 3.5).

The detector should be within  ±30° of the center of 

• 

the glass to be protected (line B in 

fi

 gure 3.5).

Jumper P3 must be installed to disable the magnetic 

• 

contact. See Section 5.

Figure 1.1: Board Layout

If you must install the DS1109i in a zone that is armed 

• 

when occupied:

Avoid acoustically live areas such as kitchens and bath-

• 

rooms.

Use a delay zone to allow time to acknowledge user caused 

• 

false alarms.

Instruct users of the system how to respond to such an 

• 

alarm.

Remember:

The best mounting location is less than 10 ft (3 m) from 

• 

the glass, and in direct line of sight of the glass. Do not 

exceed the maximum range.

Range will be reduced in areas that are acoustically soft. 

• 

This may be due to carpeting, drapes, plants, or other 

sound absorbing materials. The DS1110i Glass Breakage 

Tester should be used to verify range in all installations.

Glass break detectors are intended only as a component of 

• 

a perimeter protection system. They should always be used 

in conjunction with motion sensors.

Glass breakage detectors are designed to detect the break-

• 

age of framed glass and may not detect such things as bul-

let holes, spontaneous breakage of glass (with no impact), 

and removal of glass.

Maximum Range:

The maximum detection range is 10 ft (3 m) from the farthest 

corner, for glass sizes 12 in x 12 in

(30 cm x 30 cm) and larger.

3  Selecting a Mounting Location

Opposite Wall Mounting Using the Door Contact

•  Mount the detector where there are no objects between 

itself and the glass.

Make sure the detector is no farther than 10 ft (3 m) from 

• 

Figure 3.2: Side View

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