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It looks like an industrial photoelectric sensor, including laser based ones run around $100, so maybe that can be a realistic swap.
https://www.automationdirect.com/adc/shopping/catalog/sensor...
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It looks like an industrial photoelectric sensor, including laser based ones run around $100, so maybe that can be a realistic swap.
https://www.automationdirect.com/adc/shopping/catalog/sensor...