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Amazon.com: Gikfun 5mm 940nm LEDs Infrared Emitter and IR Receiver Diode for Arduino (Pack of 20pcs) EK8443 : Industrial & Scientific
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RadioShack Infrared LED Emitter and Detector-276-0142 | Hoelscher's Fine Furniture, Appliances & Electronics | Floresville and Pleasanton, TX
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Chanzon 5mm IR Infrared LED Diode Emitter + Receiver 940nm Sender Reciver Kit + VS1838B 1838 Sensor Ray Night Vision 940 nm 20pcs Lighting Lamp Bulbs Assortment for Arduino Raspberry - - Amazon.com
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