uxcell 10pcs 5mm 940nm Infrared Emitter Diode DC 1.35V LED IR Emitter Light Emitting Diodes Clear Blue Round Head TSAL6200: Amazon.com: Industrial & Scientific
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HiLetgo 5mm 940nm LEDs Infrared Emitter and IR Receiver Diode 5MM Infrared Emission+Receiver Tube (Pack of 10Pairs): Amazon.com: Industrial & Scientific
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Adafruit High Power Infrared LED Emitter - STEMMA JST PH 2mm : ID 5639 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Super-bright 5mm IR LED [940nm] : ID 387 : $0.75 : Adafruit Industries, Unique & fun DIY electronics and kits
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