2PCS For Industrial ThroughBeam Photoelectric Sensor Switch Counting Module

2x TTP223 Mini Capacitive Touch Switch Button Self-lock/No-lock Module Arduino

5 Pack Infrared Break Beam Sensor with LED Photoelectric Switch 5MM for Arduino

Photoelectric Switch For Speed Measurement Detects Objects Interrupting Beam

Magnetic Switch Module - Reed Switch - 3 Pin Arduino Module - Free P&P

3 pin Optical Sensitive Resistance Light Detection Module for Arduino DIY Kit

Light Sensor Module - Arduino Module - 3 Pin - Free P&P

TTP223 Mini Red Capacitive Touch Switch Button Self lock/No-lock Module Arduino