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Fire & Security Products
Siemens Building Technologies Group
06.2001
1.2 Design
OptoRex DO1101-Ex
The OptoRex DO1101-Ex is eminently suited to early
detection of smoldering fires, but it also quickly detects
flaming fires that produce smoke. The newly developed,
high-quality optoelectronic system ensures a homogenous
response behavior across a wide smoke spectrum, rang-
ing from light-colored to dark smoke.
The OptoRex DO1101-Ex conforms to EN 54-7 and is con-
sequently a universal smoke detector.
ThermoRex DT1101-Ex / DT1102-Ex
The DT1101-Ex/DT1102-Ex ThermoRex is suitable for the
monitoring of rooms in which upon an outbreak of fire, a
rapid rise in temperature is to be expected.
The DT1101-Ex ThermoRex complies with standard EN
54-5 and can be used for a wide range of applications. The
DT1102-Ex ThermoRex complies with standard EN 54-5
and is suitable for higher ambient temperatures.
The built-in response indicator (red LED) serves as a local status
indicator. An external response indicator can be connected to the
base.
For periodic factory cleaning the detector can be easily disas-
sembled.
The detectors are fully electronic and are not subject to wear and
tear. To protect it against environmental influences the electronic
circuit has a specially developed circuit board protective coating.
The DB1101 detector base is mounted on the ceiling direct on the
recess box direct, or surface-mounted using the DBZ1191 base at-
tachment and connected to the control unit via twin wire. The base is
fitted with spring terminals for connection.
The detectors are secured in the base DB1101 with a vibration-
proof bayonet fitting. Efficient installation and removal of a detector
is possible by means of the DZ1191 detector extractor. For testing of
the DO1101-Ex serves the RE6 testing unit. DT1101Ex and
DT1102-Ex can only be tested with RE6T in non-explosion hazard
areas. By means of extension tubes this work can be carried out up
to a height of 7 metres without additional tools.
A range of base accessories is available for installation in wet areas
and for protection against theft etc.
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