E3A2-R3M4D | Omron Retro-Reflective Photoelectric Switch AC/DC Relay Output
Omron · Relays, Contactors & Switches
Description The Omron E3A2-R3M4D Photoelectric Switch is a compact retro-reflective photoelectric sensor designed for reliable object detection in industrial automation systems. Operating on a universal AC/DC power supply, it offers dependable performance with a built-in relay output and selectable Light-ON/Dark-ON operation. Known for its robust construction and long sensing range, the E3A2-R3M4D provides accurate, maintenance-free detection in a wide range of factory automation environments. Technical Specifications Condition New/Never Used Surplus Brand Omron Category Industrial Sensors Part Number E3A2-R3M4D Subcategory Photoelectric Sensors Series E3A2 Series Type Retro-Reflective Photoelectric Switch Sensing Method Retro-Reflective Output Type Relay Output Control Modes Light-ON / Dark-ON (Selectable) Sensing Distance Typically 3 m (with standard reflector) Supply Voltage AC/DC (12–240 V AC/DC, model dependent) Response Time Approx. 20 ms Light Source Red LED or Infrared (model dependent) Adjustment Method Manual Sensitivity Control Housing Material Die-Cast Metal Mounting Type Screw or Bracket Mount Connection Type Prewired Cable (2 m standard) Enclosure Rating IP66 (Dustproof, Water-Resistant) Operating Temperature -25°C to +55°C Indicators Power and Operation LEDs Protection Features Surge, Short-Circuit, and Reverse Polarity Protection Standards Compliance CE, UL, cUL Application Object Detection, Position Sensing, Conveyor Systems Country of Origin Japan Weight Approx. 0.4 lbs (180 g) Information About E3A2-R3M4D The E3A2-R3M4D is part of the Omron E3A2 Series, a family of heavy-duty photoelectric sensors engineered for durability and versatility in industrial applications. Utilizing retro-reflective sensing, it detects objects by receiving light reflected from a mounted reflector, reducing the need for precise alignment or external receivers. This model features a relay output, making it ideal for interfacing with PLCs, contactors, and control relays. It includes manual sensitivity adjustment and Light-ON/Dark-ON operation selection, offering flexibility for various detection requirements. Designed with a metal housing and sealed optics, the E3A2-R3M4D delivers long-term stability and resistance to vibration, dust, and ambient light interference. Key Features: Retro-Reflective Sensing: Uses a reflector for easy installation and long detection range. Universal Power Compatibility: Operates on both AC and DC supply voltages. Relay Output Control: Provides direct switching capability for PLCs or relays. Selectable Light-ON/Dark-ON Mode: Easily configurable for different sensing applications. Rugged Construction: Metal housing ensures durability in harsh environments. Manual Sensitivity Adjustment: Allows fine-tuning for optimal detection accuracy. Fast Response Time: Ensures quick detection suitable for high-speed automation lines. Long Operational Life: Proven reliability in continuous industrial service. The E3A2-R3M4D delivers the reliability and precision required for object detection, part counting, and position sensing in industrial automation systems.
Brand: Omron · Category: Relays, Contactors & Switches
Key features
- Retro-Reflective Sensing: Uses a reflector for easy installation and long detection range.
- Universal Power Compatibility: Operates on both AC and DC supply voltages.
- Relay Output Control: Provides direct switching capability for PLCs or relays.
- Selectable Light-ON/Dark-ON Mode: Easily configurable for different sensing applications.
- Rugged Construction: Metal housing ensures durability in harsh environments.
- Manual Sensitivity Adjustment: Allows fine-tuning for optimal detection accuracy.
- Fast Response Time: Ensures quick detection suitable for high-speed automation lines.
- Long Operational Life: Proven reliability in continuous industrial service.
Specifications
| Manufacturer part number | E3A2-R3M4D |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Omron |
| Category | Industrial Sensors |
| Part Number | E3A2-R3M4D |
| Subcategory | Photoelectric Sensors |
| Series | E3A2 Series |
| Type | Retro-Reflective Photoelectric Switch |
| Sensing Method | Retro-Reflective |
| Output Type | Relay Output |
| Control Modes | Light-ON / Dark-ON (Selectable) |
| Sensing Distance | Typically 3 m (with standard reflector) |
| Supply Voltage | AC/DC (12–240 V AC/DC, model dependent) |
| Response Time | Approx. 20 ms |
| Light Source | Red LED or Infrared (model dependent) |
| Adjustment Method | Manual Sensitivity Control |
| Housing Material | Die-Cast Metal |
| Mounting Type | Screw or Bracket Mount |
| Connection Type | Prewired Cable (2 m standard) |
| Enclosure Rating | IP66 (Dustproof, Water-Resistant) |
| Operating Temperature | -25°C to +55°C |
| Indicators | Power and Operation LEDs |
| Protection Features | Surge, Short-Circuit, and Reverse Polarity Protection |
| Standards Compliance | CE, UL, cUL |
| Application | Object Detection, Position Sensing, Conveyor Systems |
| Country of Origin | Japan |
| Weight | Approx. 0.4 lbs (180 g) |
| Product type | Photoelectric Switch |
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