Set of 2 pieces · Optical smoke detector · 24 V DC · For ceiling mounting · Can be used as a secondary and tertiary detector on all DORMA hold-open systems · With potential-free changeover contact · Generally approved by the building authorities DIBt, Berlin and VdS, Cologne, tested according to EN 54, Part 7 · Acceptance test required Further technical features: · Detector height: 44mm · Detector length: 100mm · Output voltage: none · Subject to inspection: yes
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