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Intro to IR Circuits : 9 Steps (with Pictures) - Instructables
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Baja Designs Squadron Pro 850nm IR LED Work/Scene | eBay
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IR Sensor | Basics, Types, Circuit, Working, Projects, FAQs
Amazon.com: Total Invisible 940nM IR lamp Board with Light Sensor (48 Black LED Illuminator Array) 30ft Range, 120 deg, 12VDC : Electronics
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