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UNITEC Smoke detector with magnetic holder, assembly without tools and drilling, with strong 3M adhesive pads for a secure hold, with LED function indicator, alarm when smoke development with 85 dB :
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UNITEC Rauchwarnmelder mit Magnethalterung, Montage ohne Werkzeug und Bohren, mit starken 3M Klebepads für sicheren Halt, mit LED-Funktionsanzeige, Alarm bei Rauchentwicklung mit 85 dB : Amazon.de: Baumarkt