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The sounder circuit is protected by a fuse rated at 5A (quick acting)
Constructed with metal cabinet
and the terminal block is simply inserted into the connector at the back of the unit
it is one of Europe's best-selling addressable fire panels
ivory and black colours
Orbis Intrinsically Safe Heat Detector A1R ORB-HT-51146 Ctec Addressable The sounder circuit is protectedThe European Standard EN 54 5 classifies heat detectors to the highest ambient temperature in which they can safely be used without risk of false alarm. The classes are identified by the letters A to G (Class 1 is subdivided into A1 and A2). In addition to the basic classification, detectors may be identified by a suffix to show that they are rate of rise (suffix R) or fixed (static) temperature (suffix S) types. All heat detectors in the Orbis I. S.
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