{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF7844-8BD20-0SS1","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF7844-8BD20-0SS1","canonicalUrl":"https://aoctrl.com/siemens/3SF7844-8BD20-0SS1","factsUrl":"https://aoctrl.com/api/mcp/products/3SF7844-8BD20-0SS1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC FS420i Type 4 safety light curtain receiver, 30 mm resolution, 1350 mm protective height, 0 to 18 m range, PROFIsafe bus connection, order code 3SF7844-8BD20-0SS1.","salesMarkdown":"The Siemens 3SF7844-8BD20-0SS1 is a Type 4 safety light curtain receiver from the SIMATIC FS420I family, built for guarding hazard zones where a 30 mm detection capability is needed — catching fingers reaching into the danger area per IEC 61496-1. The 1350 mm protective height and 0 to 18 m range cover a wide access point or perimeter on a conveyor line or machine cell. The PROFIsafe bus connection means it talks directly to a safety-rated PLC over the fieldbus, no separate safety relay needed between the curtain and the controller.","metaTitle":"Siemens 3SF7844-8BD20-0SS1 Light Curtain Receiver, 1350mm","metaDescription":"Siemens 3SF7844-8BD20-0SS1 Type 4 safety light curtain receiver, 30mm resolution, 1350mm height, 0-18m range, PROFIsafe. Current lifecycle stage. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Safety Interlock Switches"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3SF7844-8BD20-0SS1/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3SF7844-8BD20-0SS1 and get a price?","answer":"The 3SF7844-8BD20-0SS1 is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What are the key specs of the 3SF7844-8BD20-0SS1 light curtain receiver?","answer":"It is a Type 4 standard receiver with 30 mm resolution, 1350 mm protective height, and a 0 to 18 m operating range, using a PROFIsafe bus connection within the SIMATIC FS420I system."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF7844-8BD20-0SS1","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3SF7844-8BD20-0SS1 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}}