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E3FA-RN21

E3FA-RN21 Photoelectric Sensor | Retro-Reflective Sensor | 2m Range | M12 Connector | IP67/IP69K

SKU: E3FA-RN21

Omron E3FA-RN21 retro-reflective photoelectric sensor with 2m sensing range and PNP output. Compact M12 sensor with reflector detection for reliable object sensing in automation.

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Product Overview

The Omron E3FA-RN21 Photoelectric Sensor provides reliable long-range object detection using retro-reflective sensing technology. This industrial-grade sensor offers a consistent 2-meter detection distance when paired with a compatible reflector, making it ideal for applications requiring extended sensing ranges. Featuring a red LED light source (624nm) and IP67/IP69K protection ratings, the E3FA-RN21 withstands harsh industrial environments, including washdown conditions common in food processing and packaging. With PNP open collector output and a standard M12 connector for quick installation, this sensor delivers fast 0.5ms response times for high-speed automation tasks in material handling, conveyor systems, and assembly lines. Operating on a 10-30VDC power supply with selectable Light-ON/Dark-ON modes, the E3FA-RN21 ensures flexible and stable performance across an operating temperature range of -40°C to 55°C.

  • SKU: E3FA-RN21
  • Series: E3FA-RN21
  • Voltage: 10 TO 30 VDC

Best-Fit Applications

  • Direct replacement and maintenance inventory planning for sensors assemblies.
  • Machine build and retrofit projects where verified Omron part authenticity is required.
  • Urgent breakdown recovery when lead time and logistics coordination impact downtime costs.

Buying Checklist

  • Confirm full SKU suffix and revision before ordering to prevent compatibility issues.
  • Include destination country and required date when requesting quote for accurate freight options.
  • Share quantity tiers to receive optimized unit pricing for pilot and production batches.
  • This model is part of the E3FA-RN21 line, useful for family-level replacement matching.
  • Electrical selection signal: 10 TO 30 VDC.

Technical Specifications

Sensing Method Retro-reflective (with reflector)
Sensing Distance 2 m (with reflector)
Light Source Red LED (624 nm)
Power Supply 10 to 30 VDC
Output Type PNP open collector
Connection M12 connector
Response Time 0.5 ms max
Protection Rating IP67/IP69K
Operating Temperature -40 to 55°C

FAQ for E3FA-RN21

Is E3FA-RN21 available for immediate shipment?
Many popular SKUs are available from stock. Share required quantity and destination to confirm exact lead time.
Can you help verify if E3FA-RN21 matches my existing part?
Yes. Send your current part label, machine model, or photo and we can validate compatibility before ordering.
Do you provide warranty and authenticity support?
Yes. We supply genuine Omron products with warranty support and can provide origin and packing evidence when requested.

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