Bosch DS820 User Manual

Intrusion Alarm Systems | DS820 and DS835 Series TriTech Motion Detectors
DS820 and DS835 Series TriTech Motion
Detectors
www.boschsecurity.com
u Artificial intelligence
u Five detection layers including look down zones
u Five mounting options
u Selectable PIR sensitivity
u Vertical and horizontal pointability
The DS820 and DS835 Series Detectors provide
immunity to false alarms caused by pets. Passive
Infrared and microwave processing provides excellent
catch performance with freedom from false alarms.
Frequency Model
9.9 GHz DS820-B, DS820B-FRA, DS820B-ITA,
DS835-B, DS835B-FRA, DS835B-ITA, DS835C
10.475 GHz DS820CH-SWI, DS835CH-SWI
10.525 GHz DS820, DS820-BEL, DS820-CAN, DS820-NEL,
DS835, DS835-BEL, DS835-CAN, DS820-NEL
10.687 GHz DS820-A, DS835-A
Functions
Signal Processing
Uses passive infrared and microwave technologies to
provide an alarm condition when both fields of
protection are simultaneously activated. Alarm signals
must meet the signaling requirements of both
technologies to activate an alarm. Adjustable PIR and
microwave sensitivity.
Microwave Signal Processing
Pattern recognition circuitry identifies and ignores
repetitive false alarm sources. Adaptive processing
adjusts to background disturbances. This helps to
reduce false alarms while maintaining catch
performance.
Motion Analyzer II Processing
Motion Analyzer II uses multiple thresholds and timing
windows to analyze timing, amplitude, duration, and
polarity of signals to make an alarm decision. It will
not alarm on extreme levels of thermal and
illumination disturbances caused by heaters and air
conditioners, hot and cold drafts, sunlight, lightning,
and moving headlights. Provides three sensitivity
settings.
Test Features
Externally visible alarm LED flashes to indicate a
trouble condition.
Draft and Insect Immunity
The sealed optical chamber provides immunity to
drafts and insects.

Bosch DS820 Specifications

General

Coverage Area	360°
Detection Range	40 ft (12 m)
Current Consumption	12 mA at 12 VDC
Alarm Relay/Output	Normally Closed (NC)
Tamper Switch	Normally Closed (NC)
Mounting	Ceiling
Humidity	5% to 95% non-condensing

Summary

Core Technologies and Processing

Signal Processing

Combines PIR and microwave signals for alarm activation, with adjustable sensitivity.

Microwave Signal Processing

Uses pattern recognition and adaptive processing to reduce false alarms.

Motion Analyzer II Processing

Analyzes signal timing, amplitude, duration, and polarity for accurate alarm decisions.

Detector Specifications and Features

Supervised Microwave and PIR

Patented circuitry provides single technology coverage if microwave fails.

Pet Immunity

Distinguishes human signals from pet signals for false alarm immunity.

Technical Specifications

Environmental Considerations

Ordering Information

DS820 Detector (10.525 GHz)

General DS820 model details and order number.

DS820-A Detector (10.687 GHz)

DS820-A model with 10.687 GHz frequency and its order number.

DS820-B Detector (9.9 GHz)

DS820-B model with 9.9 GHz frequency and its order number.

DS820-BEL Detector (10.525 GHz)

DS820-CAN Detector (10.525 GHz)

DS820-NEL Detector (10.525 GHz)

DS820B-FRA Detector (9.9 GHz)

DS820B-ITA Detector (9.9 GHz)

DS820CH-SWI Detector (10.475 GHz)

DS835 Detector (10.525 GHz)

General DS835 model details and order number.

DS835-A Detector (10.687 GHz)

DS835-A model with 10.687 GHz frequency and its order number.

DS835-B Detector (9.9 GHz)

DS835-B model with 9.9 GHz frequency and its order number.

DS835-BEL Detector (9.9 GHz)

DS835-CAN Detector (9.9 GHz)

DS835-FRA Detector (9.9 GHz)

DS835B-ITA Detector (9.9 GHz)

DS835-NEL Detector (9.9 GHz)

DS835CH-SWI Detector (10.475 GHz)

DS835C Detector (10.525 GHz)