4 Pack IR Break Beam Sensor 3mm LED Pair Set for Object Detection

4 Pairs IR Beam Sensor with 3mm LEDs for Automation and Security

4 Pairs IR Break Beam Sensor 3MM LEDs Counting Photoelectric Switch New

4 Pairs IR Break Beam Sensor 3mm LED Counting Photoelectric Switch

IR Beam Sensor 4 Pair Set Compact Design for Tight Space Installation