{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"E3T-SL21M","brand":"Omron","brandSlug":"omron","productSlug":"E3T-SL21M","canonicalUrl":"https://aoctrl.com/omron/E3T-SL21M","factsUrl":"https://aoctrl.com/api/mcp/products/E3T-SL21M","rawCanonicalId":null},"summary":{"shortDescription":"Omron E3T-SL21M Ultracompact Convergent-Reflective Photoelectric Sensor, NPN, 5 to 30 mm Sensing Distance, 12-24 VDC, 1 ms Response.","salesMarkdown":"## What you're getting E3T-SL21M is a current-production ultracompact convergent-reflective photoelectric sensor with built-in amplifier, NPN open-collector output. Senses objects from 5 to 30 mm (50 × 50 mm white paper). Responds in 1 ms max. Runs on 12 to 24 VDC ±10%. Output handles 50 mA max at 26.4 VDC. Includes reverse polarity, short-circuit, and mutual interference protection. Typical lead time 1-10 working days.","metaTitle":"Omron E3T-SL21M Photoelectric Sensor, NPN, 5-30mm, 12-24VDC","metaDescription":"Current production NPN convergent-reflective sensor. 5-30mm range, 1ms response, 50mA output. Sourced to order—RFQ for volume or urgent need. Ships 1-10 days typical.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"Item":"NPN","Weight":"0.02 kg","Appearance":"Side-view","Product No.":"E3T-SL21M","Manufacturer":"Omron","Product Type":"Ultracompact, Ultrathin Photoelectric Sensors with Built-in Amplifiers","Response Time":"Operate or reset: 1 ms max","Control Output":"Load power supply voltage: 26.4 VDC max. Load current: 50 mA max. (residual voltage: 2 V max. for load current of 10 to 50 mA, 1 V max. for load current of less than 10 mA), Open-collector output","Sensing Method":"Convergent-reflective","Shipping Weight":"1 kg","lifecycle_stage":"current","Sensing Distance":"5 to 30 mm(50 × 50 mm white paper)","Current Consumption":"20 mA max.","Dielectric Strength":"1,000 VAC, 50/60 Hz for 1 min","Estimated Lead Time":"Usually ships in 1-10 working days.","Protection Circuits":"Power supply and control output reverse polarity protection , Output short-circuit protection ,Mutual interference prevention","Power Supply Voltage":"12 to 24 VDC ±10%, ripple (p-p) 10% max.","Insulation Resistance":"20 M min. at 500 VDC","Ambient Humidity Range":"Operating: 35% to 85% , Storage: 35% to 95% (with no condensation)","Hysteresis (white paper)":"6 mm max.","Ambient Temperature Range":"Operating: -25 to +55°C , Storage: -40 to +70°C (with no icing or condensation)","Light Source (wavelength)":"Red LED (650 nm)","Shock Resistance (destruction":"1,000 m/s2 3 times each in X, Y, and Z directions","Minimum Detectable Object (typical)":"0.15-mm dia.(sensing distance 10 mm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$119.00 – $205.00","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3b4af78bcb8e2bdb1727a80da28f7169.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/E3T-SL21M/alternatives.json"},"ai":{"faq":[{"question":"What is E3T-SL21M's listed item (NPN) on this component line?","answer":"The listed item is NPN (open-collector output)."},{"question":"What is E3T-SL21M's listed weight?","answer":"Unit weight is 0.02 kg; shipping weight is 1 kg (bulk packaging)."},{"question":"Will E3T-SL21M drop into a panel that was specified around E3T-SL24 without rewiring?","answer":"No — the output polarity differs: E3T-SL21M is NPN, E3T-SL24 is PNP. Wiring and PLC input card must be compatible with NPN."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/omron/E3T-SL21M","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-SL21M when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}