{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"E3Z-R81K","brand":"Omron","brandSlug":"omron","productSlug":"E3Z-R81K","canonicalUrl":"https://aoctrl.com/omron/E3Z-R81K","factsUrl":"https://aoctrl.com/api/mcp/products/E3Z-R81K","rawCanonicalId":null},"summary":{"shortDescription":"Omron E3Z-R81K, Retro-reflective Photoelectric Sensor with Built-in Amplifier, Red LED (660 nm), 3 m range, M.S.R. function, Pre-wired, 30 mA consumption.","salesMarkdown":"## Sourcing & Compatibility The E3Z-R81K is Omron's current-production retro-reflective photoelectric sensor — lifecycled as 'current', no obsolescence or last-time-buy in sight. That's one less SKU to worry about for long-term BOMs. This unit uses the same Red LED (660 nm) light source, same M.S.R. function for shiny targets, and same pre-wired connection as the E3Z-R61K. The only difference the listing carries is cable length: R61K states 2 m, R81K leaves it unstated but shares the same body and mounting. For a panel already wired with flying leads, this drops in without rewiring. If you need a connector rather than a pigtail, the E3Z-R61K-M3J gives you a 0.3 m cable with an M8 4-pin connector — same sensing core, different termination. The 3 m sensing distance is the range to the reflector (150 mm dead zone at the lens). The M.S.R. function suppresses false signals from shiny backgrounds — relevant if you're sensing glossy packages or metal cans on a conveyor.","metaTitle":"Omron E3Z-R81K Photoelectric Sensor, Retro-reflective, 3m","metaDescription":"Omron E3Z-R81K retro-reflective photoelectric sensor with built-in amplifier. Red LED (660 nm), 3 m range, M.S.R. function, pre-wired. Active production — RFQ for BOM pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"title":"E3Z-R81K","Weight":"0.06 Kg","Product No.":"E3Z-R81K","description":"Photoelectric Sensor with Built-in Amplifier","Light source":"Red LED (660 nm)","Product Type":"Photoelectric Sensor with Built-in Amplifier","Sensing method":"Retro-reflective (with M.S.R. function)","Shipping weight":"1.0 Kg","lifecycle_stage":"current","Sensing distance":"3 m (150 mm)","Connection method":"Pre-wired","Current consumption":"30 mA max.","Estimated Lead Time":"Usually ships in 1-10 working days."}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$107.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/271237c888bfbb3f997f9060e5248e9a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Will the E3Z-R81K drop into a panel wired for the E3Z-R61K?","answer":"Yes. Both use the same retro-reflective sensing method with M.S.R. function, same Red LED (660 nm), same 3 m range, and pre-wired cable. The E3Z-R81K is a functional and mechanical drop-in for the E3Z-R61K."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/E3Z-R81K","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/E3Z-R81K 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}}