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WUBBHIN LED Light Emitting Diodes 10 pairs, Side Looking, 940nm IR LED Pair, Emitting Diode SIR4045 and Phototransistor SGPT4045 for Science Project Experiment : Amazon.co.uk: Business, Industry & Science
5x 51p3c Led Fototransistor Infrarrojo Diametro 5mm | MercadoLibre
Phototransistor usage. - General Electronics - Arduino Forum
The electronic circuit connecting the phototransistor and an IR LED to... | Download Scientific Diagram
Led Emissor Infravermelho 5mm Fototransistor Transmissor - Diverso Eletrônica