{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF7844-8BB13-0SS1","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF7844-8BB13-0SS1","canonicalUrl":"https://aoctrl.com/siemens/3SF7844-8BB13-0SS1","factsUrl":"https://aoctrl.com/api/mcp/products/3SF7844-8BB13-0SS1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC FS420I Type 4 standard receiver, 14 mm resolution, 900 mm height, blanking, 0 to 6 m range, PROFIsafe bus connection, order code 3SF7844-8BB13-0SS1.","salesMarkdown":"## Safety light curtain receiver for guarded zones The Siemens 3SF7844-8BB13-0SS1 is a Type 4 safety light curtain receiver from the SIMATIC FS420I family, designed for use with a matching emitter to create an electro-sensitive protective device (ESPE) per IEC 61496-1/2. Its 14 mm resolution means it detects fingers reaching into a hazard zone — finger-protection class — and the 900 mm protected height covers a typical machine access opening. The 0 to 6 m operating range gives flexibility for guarding larger cells or walk-up areas. This receiver integrates via PROFIsafe bus connection, so it talks directly to a F-CPU over PROFINET without a separate safety relay. The blanking function (fixed or floating) lets you ignore stationary objects like a workpiece fixture within the field, while the Type 4 architecture ensures a single failure does not lead to loss of the safety function. This is the receiver unit only; it requires a matching Type 4 emitter from the same FS420I family to form a complete light curtain. Mounting brackets and alignment aids are ordered separately. The PROFIsafe bus connection uses a standard M12 connector, so the field wiring is a single cable back to the switch or IO-Link master.","metaTitle":"Siemens 3SF7844-8BB13-0SS1 Type 4 Light Curtain Receiver, 14","metaDescription":"Siemens 3SF7844-8BB13-0SS1 Type 4 safety light curtain receiver, 14 mm resolution, 900 mm height, 0-6 m 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/3SF7844-8BB13-0SS1/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3SF7844-8BB13-0SS1 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability — the quote will reflect the volume and lead time at that moment."},{"question":"What is the PROFIsafe connection on the 3SF7844-8BB13-0SS1?","answer":"The PROFIsafe bus connection allows the receiver to communicate safety signals directly over PROFINET to a failsafe controller (F-CPU), eliminating the need for a separate safety relay module."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF7844-8BB13-0SS1","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/3SF7844-8BB13-0SS1 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}}