M4 Threaded Coaxial, Diffuse Reflective, R1, 2M, Recommended Replacement for
反射 光学传感器 5.9"（15cm） -
得捷:
SENSOR REFLECTIVE 15CM M4 COAX
Allied Electronics:
M4 Threaded Coaxial, Diffuse Reflective, R1, 2M, Recommended Replacement for
Electro Sonic:
Fiber Sensor