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File:OpticalSD.jpg

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English: Inside view of an optical smoke detector.
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Source Own work
Author Xmastree
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current13:31, 1 March 2009Thumbnail for version as of 13:31, 1 March 20091,443 × 973 (253 KB)Xmastree~commonswiki (talk | contribs){{Information |Description={{en|1=Inside view of an optical smoke detector.}} |Source=Own work by uploader |Author=Xmastree |Date=2009-03-01 |Permission= |other_versions= }} <!--{{ImageUpload|full}}-->

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