{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF7844-8TB08-0SS1","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF7844-8TB08-0SS1","canonicalUrl":"https://aoctrl.com/siemens/3SF7844-8TB08-0SS1","factsUrl":"https://aoctrl.com/api/mcp/products/3SF7844-8TB08-0SS1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3SF7844-8TB08-0SS1, Type 4 safety light curtain receiver, 14 mm resolution, 600 mm protected height, 0–6 m range, PROFIsafe bus connection for SIMATIC FS420I.","salesMarkdown":"The Siemens 3SF7844-8TB08-0SS1 is a Type 4 safety light curtain receiver with 14 mm resolution and 600 mm protected height, covering a 0 to 6 m operating range. It connects via PROFIsafe bus to a SIMATIC FS420I safety controller. The 14 mm detection capability means it catches fingers reaching into the hazard zone (finger-protection class per IEC 61496-1), making it suitable for guarding access points on automated assembly lines or packaging machinery where hand entry must be prevented. ## Integration Notes The receiver is part of the SIMATIC FS420I safety system and communicates over PROFIsafe, so it requires a compatible safety CPU on the same bus. The 14 mm resolution and 600 mm height define the guarded area: mount the emitter and receiver aligned at the same height, with the receiver's PROFIsafe connection wired to the FS420I interface module. The 0–6 m range covers most machine guarding distances — verify the actual separation against the maximum to avoid signal loss.","metaTitle":"Siemens 3SF7844-8TB08-0SS1 Type 4 Safety Light Curtain Recei","metaDescription":"Siemens 3SF7844-8TB08-0SS1 Type 4 safety light curtain receiver, 14 mm resolution, 600 mm height, 0–6 m range, PROFIsafe bus connection for SIMATIC FS420I. Current lifecycle stage,","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/3SF7844-8TB08-0SS1/alternatives.json"},"ai":{"faq":[{"question":"What is 3SF7844-8TB08-0SS1 used for?","answer":"It is a Type 4 safety light curtain receiver with 14 mm resolution and 600 mm protected height, used for finger detection at machine access points. It connects via PROFIsafe to a SIMATIC FS420I safety controller."},{"question":"Where can I buy 3SF7844-8TB08-0SS1?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for availability and current pricing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF7844-8TB08-0SS1","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/3SF7844-8TB08-0SS1 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}}