光学开关（反射型，光电晶体管输出） Reflective Sensor
Reflective Optical Sensor 0.150" 3.81mm Module, Pre-Wired
得捷:
SNSR OPTO TRANS 3.81MM REFL C-MT
贸泽:
光学开关（反射型，光电晶体管输出） Reflective Sensor
艾睿:
Photointerrupter Reflective Phototransistor 4-Pin
Allied Electronics:
Reflective Sensor
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