Bosch DS1108I Specsheet
Intrusion Alarm Systems | DS1108i Glassbreak Detector
DS1108i Glassbreak Detector
www.boschsecurity.com
u Microprocessor-based sound analysis technology
(SAT)
u Automatic environmental test circuitry
u Sound check
The DS1108i Detector uses microprocessor-based
sound analysis technology (SAT) to listen for the
specific frequencies associated with breaking glass.
The DS1108i can be used to detect breakage of plate,
tempered, laminated and wired glass types. A built-in
environmental test feature alerts the installer to false
alarm hazards in harsh environments. The round
enclosure mounts on ceilings or walls.
Functions
Signal Processing
Audio signals are analyzed using microprocessor-based
SAT and must produce specific frequency, signature,
and timing relationships to cause an alarm. The
sophistication of this processing technique ensures
proper catch performance while eliminating false
alarms.
Test Features
The magnet‑operated test mode provides a location
verification and operational test when using the
optional DS1110i Glassbreak Tester. The test mode
also includes an environmental test that alerts the
installer to possible false alarm sources caused by
ambient noise. The automatic sound check feature
allows the end user to verify that the detector is
powered and functioning by clapping hands. An
externally‑visible alarm LED indicates an alarm or test
condition and can be programmed to latch if desired.
Certifications and approvals
Region Certification
Europe CE 2004/108/EC EMC Directive (EMC);
2006/95/EC Low-Voltage Directive
(LVD); 2011/65/EU Restriction of the
use of certain hazardous substances in
electrical and electronic equipment(RoHS)
USA UL DS1108i: ANSR: Intrusion Detection
Units (UL639)
Installation/configuration notes
Notice
Glassbreak detectors are intended only as a
component of a perimeter protection system.
They should always be used in conjunction with
motion sensors.
2 | DS1108i Glassbreak Detector
Mounting
Mount the DS1108i detector on the ceiling, or on the
wall opposite or adjacent to the window. Coverage
depends on room acoustics and window size.
Standard Coverage
7.6 m (25 ft) for glass sizes over 30.5 cm x 30.5 cm
(12 in. x 12 in.).
Parts included
Quant. Component
1 Detector
1 Literature – Installation Guide
Technical specifications
Electrical
Current: 21 mA nominal at 12 VDC
Voltage: 9 VDC to 15 VDC
Environmental
Operating
Temperature:
Radio Frequency
Interference (RFI)
Immunity:
-29°C to +49°C (-20°F to +120°F)
For UL Certificated installations, 0°C to +49°C
(+32°F to +120°F)
No alarm or setup on critical frequencies in the
range from 26 MHz to 950 MHz at 50 V/m.
Mechanical
Dimensions
(HxDiameter):
Material: High‑impact ABS plastic enclosure
2.1 cm x 8.6 cm (0.83 in. x 3.4 in.)
Outputs
Alarm: Normally‑closed (NC) reed relay rated at 3.5 W,
Tamper: Normally-closed (NC) cover‑activated tamper
125 mA at 28 VDC for resistive loads
switch with separate terminals. Contacts rated
at 28 VDC, 125 mA maximum.
Ordering information
DS1108i Glassbreak Detector
Round detector uses microprocessor-based sound
analysis technology (SAT) to listen for the specific
frequencies associated with breaking glass.
Order number DS1108i
Accessories
DS1110i Glassbreak Tester
Used to test DS1101i, DS1102i, DS1103i, and DS1108i
Glass Break Detectors. Powered by a 9 V alkaline
battery (supplied).
Order number DS1110i
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