Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Global industrial sourcing · Houston, Texas info@mropartsrfq.com
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Omron
E3RA-RN21
Omron E3RA-RN21 E3FA-E3FB
The Omron E3RA-RN21 is a cylindrical radial retro-reflective photoelectric sensor from the E3FA-E3FB product family, featuring an M18 thread size and an ABS housing with IP67 and IP69K degrees of protection. This polarized red light sensor provides a sensing distance of 100 to 3000 mm, manual adjustment, M.S.R. technology, and an M12 connector for a 10-30 V power supply. It delivers an NPN output with selectable Dark-ON or Light-ON operation modes and a 0.5 ms response time. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
Request pricing and availabilityCommercial response within one business day for your destination and required quantity.
Request a QuoteWhy no listed price?
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Omron references — within one business day.
- Manufacturer
- Omron
- Part number
- E3RA-RN21
- Product series
- E3FA-E3FB
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to E3RA-RN21.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Product Family
- E3FA-E3FB
- Shape
- Cylindrical radial
- Sensing method
- Retro-reflective
- Sensing distance
- 3000 mm
- Sensing distance (min.)
- 100 mm
- Setting method
- Manual adjustment
- Connection method
- Connector M12
- Output type
- NPN
- Operation mode
- Dark-ON, Light-ON
- Response time
- 0.5 ms
- Material housing
- ABS
- Thread size
- M18
- Type of light
- Polarized red light
- Power supply voltage
- 10-30 V
- Features
- M.S.R.
- Degree of protection (IP)
- IP67/IP69K
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Omron E3RA-RN21. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.