SH-21E概述
300 mm 红外 LED 有线 直通光束 光电传感器, IP62
穿透光束 光学传感器 11.811"（300mm）
得捷:
SENSOR THROUGH-BEAM 300MM
Allied Electronics:
Sensor, THRU IR SIDE SENSE 300MM SUPER-SLIM
Verical:
Photoelectric Sensor Thru-beam
MASTER:
Photoelectric Sensor Thru-beam 0.3m
Electro Sonic:
Photoelectric Sensor Thru-beam 0.3m
在线购买SH-21E