BUY EE-SX1109 https://www.utsource.net/itm/p/4410422.html
Ultra-Compact Photomicrosensors with Surface-Mount Design
Description: Photoelectric Switch Features: Compact, low-profile design High-speed response Easy wiring High-sensitivity Long sensing distance High-reliability Easy setting Variety of models Applications: Detecting small objects Detecting transparent objects Position detection Counting Speed detection (For reference only)