e1901a
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Fire & Security Products
Siemens Building Technologies Group
06.2001
1.2
Design
The PolyRex detector DOT1151A-Ex is installed in a modern, attractive, impact-resistant
plastic housing that fits unobtrusively into any room architecture. The detector is secured in
the DB1151A base with a vibration-proof bayonet fitting. Except for the identification mod-
ule that defines the installation location at the time the system is commissioned, the base
does not contain any electronic components.
The detector is equipped with a response indicator (red LED) to indicate alarm. Activated
from the control unit, the response indicator can also be programmed to provide informa-
tion for servicing purposes. Each detector is equipped with an output for connecting an ex-
ternal response indicator. This indicator is normally assigned to the connected detector but
it can also be assigned programmatically to any detector within the same object.
The detector is fully electronic and has no wearing parts. As protection against environ-
mental influences the electronic circuitry is shielded and the circuit board is coated with a
special protective varnish. For periodic factory overhaul the protective hood and grille can
be removed.
In explosion-hazard rooms the DB1151A detector base is mounted on the ceiling direct by
means of the recess box, or surface-mounted together with the DBZ1191 base attachment
and connected to the control unit with twin wire via a shunt Zener diode barrier and possibly
other devices. The base has spring terminals for connection.
Efficient installation, removal and testing of a detector is possible by means of the DZ1191
detector extractor and the RE6 testing unit. If an extension tube is used, work up to a ceiling
height of 7m can be performed without any further tools. A comprehensive range of base
accessories is available for special applications such as installation in humid environ-
ments, protection against unauthorized removal, etc.
IMPORTANT!
The DZ1193 optoelectronic detector tester and exchanger and the RE6T heat
detector tester may not be used in explosion-hazard areas!
