Photoelectronic Sensors (E3FA, E3RA, E3FB, E3RB)

Omron - Automation & Safety
Part Number Information
Part #: Price/Availability:
E3FA Buy Now
E3RA Buy Now
E3FB Buy Now
E3RB Buy Now

Omron's compact E3FA series of photoelectric sensors is simple and quick to mount, as well as easy and intuitive to set-up. The large and robust adjuster makes life much easier for installers to adjust the sensor, as does the bright, high-power red LED, which is clearly visible for easy alignment, even over longer distances. Similarly, the sensor's LED status indicator can be viewed from long distances and wide angles.

This extensive photoelectric sensor series with high reliability and enhanced performance includes through-beam, retro-reflective and diffuse reflective types in straight and radial versions. Straight versions are also available with background-suppression, limited-reflective detection, and transparent object detection types for special applications. All models are available in plastic and metal housing.

Especially designed for machines that never stop, the rugged E3FA series offers completely reliable sensing in a robust and waterproof housing that can withstand even high-pressure cleaning. Exceeding market standards, this series also has high EMC protection and light immunity. In addition, there is the added benefit of the high-power LED, which contributes to high sensing stability even in environments with dust or vibrations.

Available Sensor types: Through-beam, retro-reflective, co-axial reflective, diffuse reflective, BGS, and transparent detected with P-opaquing function


  • Simplicity
    • Simple selection
    • Simple installation
  • One family for all
    • All standard applications covered
    • A wide variety of models
    • Models designed for special applications
  • Non-stop detection
    • High quality and reliability
    • High EMC protection
    • High light immunity
    • Robust and waterproof housing


  • Industrial plants
    • Food and beverage
    • Textiles
    • Ceramics
    • Brick production