{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF7844-8BD22-1SS1","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF7844-8BD22-1SS1","canonicalUrl":"https://aoctrl.com/siemens/3SF7844-8BD22-1SS1","factsUrl":"https://aoctrl.com/api/mcp/products/3SF7844-8BD22-1SS1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC FS420I safety light curtain, Type 4 host receiver, 30 mm resolution, 1500 mm protective height, blanking, 0 to 18 m range, PROFIsafe bus connection, order code 3SF7844-8BD22-1SS1.","salesMarkdown":"The Siemens 3SF7844-8BD22-1SS1 is a Type 4 safety light curtain host receiver from the SIMATIC FS420I family, with 30 mm resolution and a 1500 mm protective height. It supports blanking and operates over a 0 to 18 m range, communicating via PROFIsafe bus connection. Type 4 per IEC 61496-1/2 means it is rated for the highest level of fault tolerance and reliability in safety light curtains — suitable for guarding hazardous zones where a failure must not lead to loss of safety function. 30 mm resolution catches fingers reaching into the hazard zone (finger-protection class per IEC 61496-1). The 1500 mm protective height covers a typical machine opening up to waist height; the 0 to 18 m range gives flexibility for longer guarding distances without adding a second curtain. Blanking allows fixed or floating objects (e.g., a workpiece carrier) to pass through the field without triggering a stop — useful on assembly or palletizing lines where the curtain must ignore a part fixture. PROFIsafe bus connection integrates directly into a Siemens safety PLC (e.g., ET 200SP F or S7-1500 F) without a separate safety relay module.","metaTitle":"Siemens 3SF7844-8BD22-1SS1 Safety Light Curtain, Type 4, 30","metaDescription":"Siemens 3SF7844-8BD22-1SS1 Type 4 safety light curtain host receiver, 30 mm resolution, 1500 mm height, 0–18 m range, PROFIsafe. Current lifecycle stage. Available 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/3SF7844-8BD22-1SS1/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3SF7844-8BD22-1SS1 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the resolution and range of 3SF7844-8BD22-1SS1?","answer":"It has 30 mm resolution and a 0 to 18 m operating range."},{"question":"Does 3SF7844-8BD22-1SS1 support blanking?","answer":"Yes, it supports blanking, allowing fixed or floating objects to pass through the detection field without triggering a stop."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF7844-8BD22-1SS1","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/3SF7844-8BD22-1SS1 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}}