透射式光敏（组图lnterrupters ）对于非接触SW ，目标检测 Transmissive Photosensors Photo lnterrupters For contactless SW, object detection
Optical Sensor Through-Beam 0.079" 2mm Phototransistor PCB Mount
得捷:
SENSOR OPT SLOT PHOTOTRAN PCB MT
Chip1Stop:
Photointerrupter Transmissive 2mm Phototransistor 4-Pin PISMR104-003