The Odyssey Conventional Optical Smoke Detector has a moulded, self-extinguishing white polycarbonate case with wind-resistant smoke inlets. Nickel-plated stainless steel wiper contacts connect the detector to the base. Inside the case, a printed circuit board has the optical system mounted on one side and the signal-processing electronics on the other. The sensing chamber is a black moulding. Configured as a labyrinth that prevents penetration of ambient light. The labyrinth has a fine gauze insect-resistant cover. The chamber houses an infrared LED and a photo-diode which has an integral visible-light filter as extra protection against ambient light.

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200-404 Datasheet