5 Pack For IR Break Beam Sensors for Arduino with NPN Signal Output Module

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

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

4 Pairs IR Break Beam Sensor Module with 3mm LED Transmitter Receiver Unit

4PCS IR Break Beam Sensor, 5MM LEDs Counting Module Split Through-Beam Photoelec

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