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Pzsmocn ITR9608 Photo Sensor Compatible with Raspberry Pi/Arduino Board. for Copier, Printer, Facsimile, Ticket Vending Machine, Opto-Electronic Switch, Motor Speed Detection, Pulse Counter.: Amazon.com: Industrial & Scientific
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Directly connecting to Optical Pulse Counter with RPi? - Getting Started - OpenEnergyMonitor Community
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Directly connecting to Optical Pulse Counter with RPi? - Getting Started - OpenEnergyMonitor Community
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