{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"E3FADN21OMI","brand":"Omron","brandSlug":"omron","productSlug":"E3FADN21OMI","canonicalUrl":"https://aoctrl.com/omron/E3FADN21OMI","factsUrl":"https://aoctrl.com/api/mcp/products/E3FADN21OMI","rawCanonicalId":null},"summary":{"shortDescription":"Omron E3FADN21OMI, E3FA series, Diffuse Reflective Photoelectric Sensor, NPN, 100 mm sensing distance, 16.6 mm wide, M12 connector, IP67/IP69K.","salesMarkdown":"The Omron E3FADN21OMI is a diffuse reflective photoelectric sensor from the E3FA series, delivering reliable presence detection up to 100 mm with a 500 µs response time. Its NPN output and M12 4-pin connector make it a straightforward pick for PLC input cards in automated lines. Operates on 10–30 VDC with selectable Light-ON/Dark-ON switching. IP67/IP69K rating allows use in high-pressure washdown environments. ## Sensing Distance Comparison with E3FADN22OMI The E3FADN22OMI shares the same 16.6 mm width, NPN output, M12 connector, and IP ratings as this sensor. The critical difference is sensing distance: the E3FADN22OMI detects at 300 mm, three times farther than the 100 mm of this model. Choose the E3FADN21OMI when your target is consistently within 100 mm and a shorter detection zone reduces false triggers from background objects. Because the mounting footprint and connector are identical, swapping between the two sensors on the same bracket requires no rewiring – only a sensitivity adjustment to match the new range. ## Form Factor & Wiring Measures 16.6 mm wide and 45 mm long. Equipped with an M12 4-pin connector, NPN output, and selectable Light-ON/Dark-ON switching. The IP69K rating withstands high-temperature, high-pressure washdown cycles common in food and beverage lines.","metaTitle":"Omron E3FADN21OMI Photoelectric Sensor, NPN, 100mm, IP69K","metaDescription":"Omron E3FADN21OMI diffuse reflective sensor, NPN output, 100 mm sensing distance, 500 µs response, IP67/IP69K. Active production, ready to ship.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"Width":"16.6 mm","title":"E3FADN21OMI","Length":"45 mm","Series":"E3FA","Light Type":"LED, Red","Sensor Type":"Diffuse Reflective Sensor","description":"Photoelectric Sensor NPN 100mm 500us 30V 100mA LED, Red Connector, M12, 4-Pin IP67 / IP69K E3FA","Load Current":"100 mA","Response Time":"500 us","Switching Type":"Light-ON / Dark-ON","lifecycle_stage":"current","Termination Type":"Connector, M12, 4-Pin","Protection Rating":"IP67;IP69K","Sensing Distance Max.":"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":"NPN"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$106.78","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/28b4f4e9e7f1903d52e1036cb760cc69.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What's the difference between E3FADN21OMI and E3FADN22OMI?","answer":"Both sensors have identical form factor, NPN output, M12 connector, and IP ratings. The key difference is sensing distance: 100 mm for the E3FADN21OMI versus 300 mm for the E3FADN22OMI. Choose based on your required detection range."},{"question":"Will E3FADN21OMI drop into a panel designed for E3FADN22OMI?","answer":"Yes – same 16.6 mm width, same M12 connector pinout, same NPN output. No rewiring needed; just recalibrate the sensitivity for the shorter sensing distance."},{"question":"What is the width of E3FADN21OMI?","answer":"The sensor is 16.6 mm wide, fitting standard mounting brackets and tight panel layouts."},{"question":"What ingress protection does it carry?","answer":"The sensor is rated IP67 and IP69K, allowing installation in wet and high-pressure washdown environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/E3FADN21OMI","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/E3FADN21OMI 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}}