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1. A smoke detection device comprising a housing, a control unit with a power unit and a scattered light sensor connected thereto arranged within the housing, wherein the scattered light sensor comprises an optical chamber having a first emitter, a second emitter and a photoreceiver arranged therein, and an emission wavelength of the second emitter is smaller than an emission wavelength of the first emitter, and the photoreceiver has a bandwidth that includes the emission wavelengths of both the first and the second emitters, wherein the wavelength of the second emitter is at least 470 nm+/−5% smaller than the wavelength of the first emitter, and the photoreceiver has a sensitivity bandwidth of at least 700+/−5% nm, while a sensitivity fluctuation within this bandwidth is not greater than 10%; wherein the control unit is configured to constantly supply power impulses to the first emitter, as well as to connect the second emitter to the power unit when a threshold signal arises at the photoreceiver, to determine levels of signals of the photoreceiver that arise during a successive supply of the power impulses to the first and the second emitters, as well as to form an alarm signal if the signal level of the photoreceiver during a second emitter connection period is at least 20% greater than the signal level of the photoreceiver during a first emitter connection period; and wherein the optical chamber is surrounded by a filtration chamber having inlet openings provided therein, the openings being aerodynamically coupled to the optical chamber via a labyrinth that terminates with a ring slit that is provided between the optical chamber and the filtration chamber along a circumference of the optical chamber.
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