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Amazon.com: Quanmin 10pcs/1 Lot 6mm×6mm×0.55mm 940nm IR Infrared Narrow Bandpass Filter Optical Glass FWHM NBF940 for Camera Lense and Face Recognition : Electronics
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Amazon.com : Gzikai 10pcs/1 Lot 6mm×6mm×0.55mm 940nm IR Infrared Narrow Bandpass Filter Optical Glass FWHM NBF940 for Camera Lense and Face Recognition : Electronics