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Omron E3FA-RN21 Retro-Reflective Photoelectric Sensor NPN M12 IP69K — front view

Omron E3FA-RN21 Retro-Reflective Photoelectric Sensor NPN M12 IP69K

SKU: E3FA-RN21

USD 16.00

Omron E3FA-RN21 is a retro-reflective photoelectric sensor with 3m range, NPN output, M12 connector, IP67/IP69K for harsh environments.

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Product Overview

The E3FA-RN21 is used to deliver repeatable machine-state detection for sequencing, interlocks, and process confirmation. Whether in packaging, handling, or assembly systems, this sensing class helps reduce false triggers and improves control confidence under continuous operation.

Repeatable State Detection

Accurate detection at the right process moment improves sequence integrity and reduces quality escapes caused by timing uncertainty or missed events.

Fit for Demanding Machine Environments

Industrial sensing components are selected for stability under vibration, contamination, and repetitive duty where consumer-grade devices are not suitable.

Faster Commissioning and Replacement

Standardized sensor families simplify spare strategy, reduce replacement errors, and support quicker return to production after maintenance events.

Key Features

  • Sensing Range: 0.1-3m
  • Output Type: NPN
  • Supply Voltage: DC12-24V
  • Connection: M12 connector
  • Protection: IP67/IP69K
  • Response Time: 1ms
  • SKU: E3FA-RN21
  • Series: E3FA
  • Voltage: 24V

Best-Fit Applications

  • Provides stable detection signals to PLC logic
  • Improves sequence timing accuracy
  • Reduces dependence on mechanical contact methods
  • Supports high-cycle production operation
  • Enables better fault isolation at machine stations
  • Simplifies maintenance through standard sensor families

Buying Checklist

  • Repeatable industrial detection behavior
  • Designed for continuous machine duty
  • Improves process timing confidence
  • Serviceable and standardizable selection
  • Reliable fit for automation sensing layers

Technical Specifications

Model E3FA-RN21
Series E3FA
Sensing Range 0.1-3m
Output Type NPN
Supply Voltage DC12-24V
Connection M12 connector
Protection IP67/IP69K
Response Time 1ms
Light Source Red LED
Material Stainless steel

FAQ for E3FA-RN21

Sensing range?
Up to 3m with reflector.
Output type?
NPN open collector.
Connector?
M12 4-pin connector.
Protection?
IP67/IP69K.

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