Relay Drive Module Photoelectric Switch Through-beam 30cm/50cm/100cm For Arduino

Photoelectric Switch Detection Distance 25cm Through-beam 30cm/50cm/100cm

2PCS For Industrial ThroughBeam Photoelectric Sensor Switch Counting Module

For IR Break Beam Sensor Module 3MM Infrared Photoelectric Switch for Arduino

5PCS For IR Break Beam Sensor Module for Arduino with 35mm Photoelectric Switch

5PCS For IR Break Beam Sensor Module for Arduino and Relay Control Systems

5PCS For IR Break Beam Sensor 35mm Photoelectric Switch for Embedded Systems