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This product has been retired from our shop and is no longer for sale. This page is made available for those looking for datasheets and the simply curious.
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This product is retired and we won’t sell it anymore. This page is for reference only.
Photointerrupter is a device that has the ability to detect when an object appears between its IR diode and phototransistor. IR diode continually emits light, whereas on the other side a phototransistor (calibrated only to the light of that diode) receives light. When you put an object between them, the phototransistor detects and sends a digital signal. It is handy as a position sensor or for counting repeating operations (e.g. speed counting).
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