Omron Retroreflective Photoelectric Sensor, Cylindrical Sensor
- RS Stock No.:
- 775-4385
- Mfr. Part No.:
- E3RB-RP21
- Brand:
- Omron
Subtotal (1 unit)*
£82.37
(exc. VAT)
£98.84
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- 3 unit(s) ready to ship from another location
- Plus 5 unit(s) shipping from 19 March 2026
- Plus 9 unit(s) shipping from 24 March 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £82.37 |
*price indicative
- RS Stock No.:
- 775-4385
- Mfr. Part No.:
- E3RB-RP21
- Brand:
- Omron
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Omron | |
| Sensor Style | Cylindrical | |
| Product Type | Photoelectric Sensor | |
| Detection Type | Retroreflective | |
| Output Type | PNP | |
| Terminal Type | 4-Pin M12 | |
| Maximum DC Voltage | 30V dc | |
| Light Source | LED | |
| Minimum Operating Temperature | -25°C | |
| IP Rating | IP67, IP69K | |
| Maximum Operating Temperature | 55°C | |
| Maximum Current | 25mA | |
| Standards/Approvals | CE | |
| Response Time | 0.5ms | |
| Housing Material | Nickel Plated Brass | |
| Hazardous Area Certification | No | |
| Series | E3RB | |
| Thread Size | M18 | |
| Detection Range | 100 mm → 3 m | |
| Select all | ||
|---|---|---|
Brand Omron | ||
Sensor Style Cylindrical | ||
Product Type Photoelectric Sensor | ||
Detection Type Retroreflective | ||
Output Type PNP | ||
Terminal Type 4-Pin M12 | ||
Maximum DC Voltage 30V dc | ||
Light Source LED | ||
Minimum Operating Temperature -25°C | ||
IP Rating IP67, IP69K | ||
Maximum Operating Temperature 55°C | ||
Maximum Current 25mA | ||
Standards/Approvals CE | ||
Response Time 0.5ms | ||
Housing Material Nickel Plated Brass | ||
Hazardous Area Certification No | ||
Series E3RB | ||
Thread Size M18 | ||
Detection Range 100 mm → 3 m | ||
Omron E3RB Series Photoelectric Sensor, 100mm Detection Range, PNP Output Type - E3RBRP21
This photoelectric sensor is designed for robust industrial sensing solutions, particularly in environments where conditions can be challenging. The sensor features a barrel style with a detection range of 100mm to 3m, making it ideal for various applications. With an IP67 rating, this non-contact detection sensor effectively withstands dust and water ingress, ensuring reliable performance in demanding settings.
Features & Benefits
• Retroreflective sensing enables reliable detection over long distances
• PNP output facilitates easy integration into existing systems
• LED light source ensures high visibility for user-friendly operation
• Operating temperature range of -25°C to +55°C accommodates diverse environments
• Quick and simple installation process reduces setup time and increases efficiency
Applications
• Utilised in logistics for automated sorting processes
• Effective in food and beverage processing lines for object detection
• Ideal for packaging machinery needing precise positioning feedback
• Effective in textile and ceramics production for automated monitoring
• Suitable for warehouse conveyor systems to enhance workflow efficiency
How does the robust housing contribute to its performance in industrial applications?
The durable nickel-plated brass housing protects internal components from dust, moisture, and physical impacts, ensuring the sensor operates effectively in harsh environments, extending its lifespan and reliability.
What factors should be considered for optimal installation of the sensor?
Proper alignment is crucial for accurate detection; users should ensure the optical axis is unobstructed and the sensor is securely mounted to avoid misalignment caused by vibrations or environmental factors.
Can this sensor be used in high-humidity settings?
Yes, with an IP67 rating, it is designed to function effectively in high-humidity environments, providing reliable detection without risk of failure due to moisture ingress.
Related links
- Omron Retroreflective Photoelectric Sensor 100 mm → 4 m Detection Range
- Omron Retroreflective Photoelectric Sensor 100 → 3000 mm Detection Range
- Omron Retroreflective Photoelectric Sensor 3 m Detection Range
- Omron Retroreflective Photoelectric Sensor 100 mm → 3 m Detection Range
- Omron Retroreflective Photoelectric Sensor 100 → 4000 mm Detection Range
- Omron Retroreflective Photoelectric Sensor 4 m Detection Range
- Omron Retroreflective Photoelectric Sensor 4000 mm Detection Range
- Omron Retroreflective Photoelectric Sensor 100 mm → 500 mm Detection Range

