{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF7844-8BD20-1SS1","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF7844-8BD20-1SS1","canonicalUrl":"https://aoctrl.com/siemens/3SF7844-8BD20-1SS1","factsUrl":"https://aoctrl.com/api/mcp/products/3SF7844-8BD20-1SS1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC FS420I Type 4 safety light curtain host receiver, 30 mm resolution, 1350 mm height, 0 to 18 m range, PROFIsafe bus connection, order code 3SF7844-8BD20-1SS1.","salesMarkdown":"## Type 4 Safety Light Curtain Host Receiver The Siemens 3SF7844-8BD20-1SS1 is a Type 4 host receiver in the SIMATIC FS420I light curtain family, configured for a 30 mm resolution, 1350 mm protective height, and a 0 to 18 m operating range with PROFIsafe bus connection. ## Safety Application Context As a Type 4 device per IEC 61496-1/2, this light curtain is rated for use in safety circuits up to SIL 3 / PL e, suitable for guarding hazard zones where a 30 mm resolution detects fingers reaching into the protected area.","metaTitle":"Siemens 3SF7844-8BD20-1SS1 Type 4 Safety Light Curtain, 1350","metaDescription":"Siemens 3SF7844-8BD20-1SS1 Type 4 safety light curtain host receiver, 30 mm resolution, 1350 mm height, 0-18 m range, PROFIsafe. 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/3SF7844-8BD20-1SS1/alternatives.json"},"ai":{"faq":[{"question":"What is the 3SF7844-8BD20-1SS1 used for?","answer":"It is a Type 4 safety light curtain host receiver with 30 mm resolution, 1350 mm height, and 0 to 18 m range, used to guard hazardous machinery areas via PROFIsafe connection to a SIMATIC FS420I safety controller."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF7844-8BD20-1SS1","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/3SF7844-8BD20-1SS1 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}}