Description

Push Button Type Photomicro Sensors

• Button operation enables accurate detection regardless of material, color, or​reflectance of target object
• Optimized for transport detection of semiconductor wafer enclosures (FOUP,
  FOSB, etc.)
• Optical detection of button operation guarantees mechanical life cycle of 5
  million operations
• Total of 4 red LED indicators (side:2, top:2) for higher visibility of operation status
• Increased product durability with steel mounting brackets
• Emitter OFF function and check stable operation functions
• Power supply reverse polarity protection circuit, output short-circuit protection circuit
  

More details:
http://autonics.com.my/products/products_detail.php?catecode=01/02/01&db_uid=9?catecode=01/02/01&db_uid=3120