{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF7844-8BB24-1SS1","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF7844-8BB24-1SS1","canonicalUrl":"https://aoctrl.com/siemens/3SF7844-8BB24-1SS1","factsUrl":"https://aoctrl.com/api/mcp/products/3SF7844-8BB24-1SS1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC FS420I Type 4 safety light curtain, host receiver, 14 mm resolution, 1650 mm height, 0–6 m range, PROFIsafe bus connection, order code 3SF7844-8BB24-1SS1.","salesMarkdown":"The Siemens 3SF7844-8BB24-1SS1 is a Type 4 safety light curtain host receiver from the SIMATIC FS420I family, rated for finger-protection class with a 14 mm resolution over a 1650 mm protective height and a sensing range of 0 to 6 meters. The 14 mm detection gap means it catches fingers reaching into the hazard zone, meeting the finger-protection class per IEC 61496-1. It communicates over a PROFIsafe bus connection, integrating directly into a safety-rated fieldbus architecture without a separate safety relay module. ## Deployment context This receiver is the sensing half of a Type 4 light curtain pair, deployed at the point of entry to a guarded hazard zone — typically a press, robot cell, or automated assembly station. The 1650 mm height covers a wide access area; the 0–6 m range suits mid-length spans common in perimeter guarding. PROFIsafe connectivity means the safety signal travels over the same PROFINET cable as standard I/O, reducing wiring and panel space compared to hardwired safety circuits.","metaTitle":"Siemens 3SF7844-8BB24-1SS1 Safety Light Curtain, Type 4, 14","metaDescription":"Siemens 3SF7844-8BB24-1SS1 Type 4 safety light curtain, 14 mm resolution, 1650 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/3SF7844-8BB24-1SS1/alternatives.json"},"ai":{"faq":[{"question":"What is the 3SF7844-8BB24-1SS1 used for?","answer":"It is a Type 4 safety light curtain host receiver with 14 mm resolution, 1650 mm height, and 0–6 m range, using a PROFIsafe bus connection for integration into safety-rated automation systems."},{"question":"Where can I buy 3SF7844-8BB24-1SS1?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF7844-8BB24-1SS1","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/3SF7844-8BB24-1SS1 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}}