{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"E3T-SL21 5M","brand":"Omron","brandSlug":"omron","productSlug":"E3T-SL21-5M","canonicalUrl":"https://aoctrl.com/omron/E3T-SL21-5M","factsUrl":"https://aoctrl.com/api/mcp/products/E3T-SL21%205M","rawCanonicalId":null},"summary":{"shortDescription":"Omron E3T series, subminiature convergent-reflective photoelectric sensor, E3T-SL21 5M, NPN output, Light-ON, 30 mm sensing distance, 5 m pre-wired cable, 12-24 VDC.","salesMarkdown":"The E3T-SL21 5M is a subminiature convergent-reflective photoelectric sensor with a built-in amplifier. It delivers a 30 mm sensing point using a red LED, switching NPN output in Light-ON mode. The body is compact rectangular plastic, pre-wired with a 5 m cable, and runs on 12 to 24 VDC. Convergent-reflective means the emitter and receiver are in one housing, focused at a fixed distance—so it ignores objects beyond that focal point, making it a clean choice for presence detection in tight spaces where background rejection matters. Type is listed as miniature, and the product lifecycle status is active. ## Integration notes The compact body (about 25 × 10 × 7 mm) fits where space is at a premium. The 5 m cable is fixed, so pre-plan your conduit or cable carrier route—no connector to swap later. Convergent-reflective range is measured from the lens face: 30 mm to the focal point. Account for target reflectivity: a polished white surface will give better margin than a dark matte surface; test with actual product before locking the bracket position. Supply voltage is 12–24 VDC, up to 50 mA load current. Light-ON means output transistor turns on when the received light is strong enough—verify that matches your PLC input logic.","metaTitle":"Omron E3T-SL21 5M Convergent-Reflective Sensor, NPN, 30mm","metaDescription":"Active subminiature convergent-reflective photoelectric sensor, NPN output, Light-ON, 30 mm range, 5 m cable, 12-24 VDC. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"Type":"Minature","title":"E3T-SL21 5M","Output":"NPN","Body Type":"Rectangular - Compact","Operation":"Light-ON (L-ON)","Connection":"Pre-wired","description":"E3T Ultra Compact Photoelectric Sensor|Subminiature sensors with built-in amplifiers","Cable Length":"5 m","Light Source":"Red LED","Sensing Method":"Convergent-reflective","Supply Voltage":"12 to 24 VDC","lifecycle_stage":"current","Housing Material":"Plastic","Product Life Cycle":"Active","Max Sensing Direction":"30 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1c54940d8ae24f22acf944f1516e53bd.pdf","sourceUrl":"https://automation.omron.com/en/us/products/family/e3t"},"ai":{"faq":[{"question":"What output configuration does the E3T-SL21 5M have?","answer":"It has an NPN output, Light‑ON (L‑ON) switching. The output transistor sinks current when light is detected."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/E3T-SL21-5M","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/E3T-SL21-5M 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}}