I can see the IR light emitted from the diode on a TV remote, and it doesn't make sense since the longest wavelength supposed to be visible is 700 nm, but remote
Learn on the fly : Repurpose old TV remote as a universal remote control- [parasite design] [chip in the middle modifier on IR signals]
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NH800UP RF402A-V14 IR Remote Control Replacement for Philips Smart LED TV 4K Ultra HD Android Smart LED TV 43PFL5766/F7 50PFL5704/F7 55PFL5604/F7 55PFL5704/F7 65PFL5504/F7 65PFL5704/F7 75PFL5704/F7 : Amazon.ca: Electronics
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