The PD60CNK18BPT from Carlo Gavazzi Inc. is an optical sensor with a 0.709" (18 mm) sensing distance and NPN/PNP output.
The PD60CNK18BPM5T from Carlo Gavazzi Inc. is a contrast optical sensor with NPN/PNP output and a 16 mm to 20 mm (0.630" to 0.787") sensing range.
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