{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"E3RARP21OMI","brand":"Omron","brandSlug":"omron","productSlug":"E3RARP21OMI","canonicalUrl":"https://aoctrl.com/omron/E3RARP21OMI","factsUrl":"https://aoctrl.com/api/mcp/products/E3RARP21OMI","rawCanonicalId":null},"summary":{"shortDescription":"Omron E3RA series retro-reflective photoelectric sensor, PNP output, 3 m sensing range, 500 µs response time, M12 4-pin connector, IP67/IP69K.","salesMarkdown":"## 3 m retro-reflective with 500 µs catch speed The E3RARP21OMI is a retro-reflective photoelectric sensor from Omron's E3RA series, delivering a 3 m sensing range with a 500 µs response time. That 500 µs means it catches objects moving past at line speed without the PLC missing the edge — the output pulse width is wide enough for a standard 24 VDC input card to register. Output is PNP, light-ON / dark-ON selectable, switching 100 mA at 10–30 VDC. The M12 4-pin connector makes field swap-out a quarter-turn — no re-termination on a live line. ## IP67 / IP69K — washdown-ready without a secondary housing Rated IP67 and IP69K, the sensor body and optics survive high-pressure, high-temperature washdown cycles common in food-and-beverage and pharmaceutical lines. The IP69K rating means the housing withstands 80 °C water at 80–100 bar — no need for a separate stainless-steel shroud. Operating temperature spans -25 °C to 55 °C, covering cold storage and washdown zones. The red LED light source is visible during alignment — you see the spot on the reflector without a separate alignment tool.","metaTitle":"Omron E3RARP21OMI Retro-Reflective Sensor, 3 m, PNP","metaDescription":"Omron E3RARP21OMI photoelectric sensor, retro-reflective, 3 m range, 500 µs response, PNP output, M12 connector, IP67/IP69K. Sourced to order — request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"title":"E3RARP21OMI","Length":"58 mm","Series":"E3RA","Light Type":"LED, Red","Sensor Type":"Retro-Reflective Sensor","description":"Photoelectric Sensor PNP 3m 500us 30V 100mA LED, Red Connector, M12, 4-Pin IP67 / IP69K E3RA","Load Current":"100 mA","Response Time":"500 us","Switching Type":"Light-ON / Dark-ON","lifecycle_stage":"mature","Termination Type":"Connector, M12, 4-Pin","Protection Rating":"IP67;IP69K","Sensing Distance Max.":"3 m","Sensing Distance Min.":"100 mm","Operating Voltage Max.":"30 V","Operating Voltage Min.":"10 V","Operating Temperature Max.":"55 °C","Operating Temperature Min.":"-25 °C","Optical Sensor Output Type":"PNP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$93.94 – $98.88","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/28b4f4e9e7f1903d52e1036cb760cc69.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order the E3RARP21OMI or check availability?","answer":"The E3RARP21OMI is a mature-production part sourced through independent distribution. No stock-holding claim — quoted to order against the BOM line."},{"question":"What is the sensing range of the E3RARP21OMI?","answer":"The sensing range is 3 m maximum, with a minimum detection distance of 100 mm. This is a retro-reflective sensor — it requires a reflector mounted opposite the sensor; the 3 m range covers conveyor lanes up to that width."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/E3RARP21OMI","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/omron/E3RARP21OMI when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}