{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF7844-8TB11-1SS1","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF7844-8TB11-1SS1","canonicalUrl":"https://aoctrl.com/siemens/3SF7844-8TB11-1SS1","factsUrl":"https://aoctrl.com/api/mcp/products/3SF7844-8TB11-1SS1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC FS420I, Type 4 safety light curtain host receiver, 14 mm resolution, 750 mm protective height, 0 to 6 m range, PROFIsafe bus connection, order code 3SF7844-8TB11-1SS1.","salesMarkdown":"The Siemens 3SF7844-8TB11-1SS1 is a Type 4 safety light curtain host receiver with 14 mm resolution and 750 mm protective height. It covers a 0 to 6 m range and connects via PROFIsafe bus. The 14 mm resolution detects 14 mm diameter objects entering the field. The 750 mm protective height covers vertical access areas. The current lifecycle stage allows specifying this into a new design or replacement order. ## Integration notes The PROFIsafe bus connection on this host receiver reduces the safety circuit to a single cable back to the failsafe controller — no hardwired OSSD outputs, no external safety relay. That cuts commissioning time on a multi-zone line: the PLC handles the mute, blanking, and restart interlock logic in software. Just align the emitter and receiver, set the PROFIsafe address, and run the safety validation routine.","metaTitle":"Siemens 3SF7844-8TB11-1SS1 Safety Light Curtain, Type 4, 14","metaDescription":"Siemens 3SF7844-8TB11-1SS1 Type 4 safety light curtain host receiver, 14 mm resolution, 750 mm height, 0–6 m range, PROFIsafe bus connection. Current lifecycle stage. Available to","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/3SF7844-8TB11-1SS1/alternatives.json"},"ai":{"faq":[{"question":"What is the 3SF7844-8TB11-1SS1 used for?","answer":"It is a Type 4 safety light curtain host receiver used for finger-protection guarding (14 mm resolution) over a 750 mm protective height, with a 0 to 6 m range and PROFIsafe bus communication, typically integrated into a SIMATIC FS420I safety system."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF7844-8TB11-1SS1","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/3SF7844-8TB11-1SS1 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}}