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IR proximity sensors

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metoo25

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Hello. I am currently working on a project, where I have to build a people counter using IR.
I need a transmitter and a receiver that would work well together. It has to work on a range from the sensor and up till 80cm. I am not looking to measure the distance, just want to know whenever someone/something is there or not.

My question is. Does anyone know any transmitter and a receiver that work well together and work up to 80 cm?

Please let me know if you have any questions.

Best regards
metoo25
 
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