DC5V IR Break Beam Sensor Module 4 Pairs 25cm Detection for Microcontroller

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

4 Pair Infrared Break Beam Sensor with 3mm LED Transmitter and Receiver

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

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

4 Pairs Infrared Break Beam Photoelectric Switch 3mm LED Emitter Receiver

4 Pair Infrared Break Beam Sensors 25cm Detection Distance Photoelectric Switch