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Velleman Mk120 Infrared Beam Kit
Velleman Mk120 Infrared Beam Kit: Velleman-Infrared-Light-Beam-Kit-Velleman-MK120-The-infrared-beam-kit-from-Velleman-will-produce-an-IR-light-beam-that-c...
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Velleman Mk120 Infrared Beam Kit: Velleman-Infrared-Light-Beam-Kit-Velleman-MK120-The-infrared-beam-kit-from-Velleman-will-produce-an-IR-light-beam-that-c...
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