{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF7844-8MS50-0MT0","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF7844-8MS50-0MT0","canonicalUrl":"https://aoctrl.com/siemens/3SF7844-8MS50-0MT0","factsUrl":"https://aoctrl.com/api/mcp/products/3SF7844-8MS50-0MT0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC FS420i, Type 4 standard safety light curtain transceiver, 500 mm resolution, 500 mm muting, 0 to 6.5 m range, PROFIsafe bus connection, muting lamp, order code 3SF7844-8MS50-0MT0.","salesMarkdown":"The Siemens 3SF7844-8MS50-0MT0 is a Type 4 standard safety light curtain transceiver rated for 500 mm resolution and a 0 to 6.5 m protective range, with integrated muting and a PROFIsafe bus connection for the SIMATIC FS420i system. Type 4 per IEC 61496-1 means it can detect a 14 mm finger through the 500 mm resolution beam array — enough to stop a hazard before a hand reaches the danger zone. The 500 mm resolution figure governs what the curtain can detect: a 500 mm object (roughly a torso) breaks the beam reliably. That's sized for access guarding where you don't need finger or hand detection — think palletizers, AGV corridors, or large-part assembly stations. The 0 to 6.5 m range gives you flexibility in bay depth; at the short end it still covers a single machine cell. Muting is integrated, so the curtain automatically suspends protection when a workpiece passes through on the conveyor, then re-arms — no external bypass logic required. ## Integration notes PROFIsafe connection means this transceiver talks safety over PROFIBUS/PROFINET to the SIMATIC FS420i safety controller — no hardwired safety relay needed for the safety loop. The muting lamp output is on the same bus, so the lamp status comes through the safety telegram. Mounting hardware and alignment brackets are standard for the FS420i family; the transceiver and receiver pair share the same form factor. No separate muting sensor module to wire in — the muting function lives inside the transceiver.","metaTitle":"Siemens 3SF7844-8MS50-0MT0 Safety Transceiver, Type 4, 500 m","metaDescription":"Siemens 3SF7844-8MS50-0MT0 Type 4 safety light curtain transceiver, 500 mm resolution, 0–6.5 m range, muting lamp, PROFIsafe connection for SIMATIC FS420i. Sourced to order; confir","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/3SF7844-8MS50-0MT0/alternatives.json"},"ai":{"faq":[{"question":"What is 3SF7844-8MS50-0MT0 used for?","answer":"It is a Type 4 safety light curtain transceiver for the SIMATIC FS420i system, providing a 500 mm resolution protective field up to 6.5 m with integrated muting for conveyor or material-handling access guarding."},{"question":"Where can I buy 3SF7844-8MS50-0MT0 and what is the price?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"What does the 500 mm resolution mean on this light curtain?","answer":"It means the curtain detects objects at least 500 mm in diameter — sized for body or torso detection, not finger or hand protection. Use it for access guarding where personnel cannot reach the hazard zone through the curtain plane."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF7844-8MS50-0MT0","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/3SF7844-8MS50-0MT0 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}}