Dow 1171 Rf Smoke Detector; Smf121 Rf Manual Call Point And Smf6120 Base - Bosch DOW 1171 Operation Manual

Radio Frequency Fire Detection System
The LSN part in the interface module is powered via the LSN (LSN = Local Security Network).
The radio module is powered via an auxiliary power supply. An integrated microcontroller
drives interfaces and user elements and is responsible for data transfer between the RF fire
detector and the fire panel. The interface module has a tamper contact, a reed contact for
manual activation of the configuration mode and three LEDs for the operating status display.
3.2

DOW 1171 RF Smoke Detector

Figure 3.4: DOW 1171 configuration closed and open
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The RF smoke detector utilizes the scattered-light method, in the same way as conventional
optical smoke detectors. In conjunction with the modern detection algorithm, it achieves a
uniform response behavior, while providing high levels of interference immunity. The detector
base contains the radio module and the inserts and connections for the batteries.
3.3

SMF121 RF Manual Call Point and SMF6120 Base

Notice!
Please note that the red LED on the RF manual call point does not light up or flash after the
alarm has been triggered. This is known and is not necessary according to EN 54-11.
Bosch Sicherheitssysteme GmbH
Detector Bases
Bayonet ring
Red LED
Detector housing
New button for logging in and resetting
Contact as removal lock
9 V lithium battery pack
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Operation Guide
System Overview | en 7
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2016.04 | 6.0 | 4.998.120.885