{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6GT2821-8AC40","brand":"Siemens","brandSlug":"siemens","productSlug":"6GT2821-8AC40","canonicalUrl":"https://aoctrl.com/siemens/6GT2821-8AC40","factsUrl":"https://aoctrl.com/api/mcp/products/6GT2821-8AC40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC RF200 RFID reader, RF280R (ASCII/scan mode), RS232 interface, IP67, 13.56 MHz, 200 mm range, 160x80x41 mm, 24 V DC.","salesMarkdown":"The Siemens 6GT2821-8AC40 is a SIMATIC RF200 series RFID reader, model RF280R, operating at 13.56 MHz with an integrated antenna. It reads ISO 15693 and ISO 18000-3 transponders, and connects to PCs or control systems via an RS232 interface through an M12 8-pin connector. The 200 mm read range is dependent on the transponder type used — check the Siemens support document for exact pairing. Rated for 24 V DC (20.4 to 28.8 V range) and drawing 0.13 A typical, it's sized for standard industrial control power supplies. The IP67 rating means the housing and integrated antenna survive washdown environments — think food processing, automotive paint shops, or outdoor conveyor lines where dust and water jets are routine. Mounting is via four M5 screws through the 160 x 80 x 41 mm housing. The PA12 material is silicon-free, important for paint shops or electronics assembly where silicone outgassing can cause adhesion failures. Shock resistance meets EN 60721-3-7 Class 7M2 at 500 m/s², and vibration resistance is 200 m/s². That's robust enough for near-machine mounting on conveyors or packaging equipment without needing a soft-mount bracket. ## Interface and data performance Communication is RS232 via the M12 8-pin connector, with a maximum cable length of 30 m. The reader supports ASCII and scan modes, and the 3-color LED gives immediate visual status without needing a screen. Typical read and write access times are 1.2 ms per byte, with a maximum RF transfer rate of 26.5 kbit/s.","metaTitle":"Siemens 6GT2821-8AC40 SIMATIC RF280R RFID Reader, 200 mm Ran","metaDescription":"Siemens 6GT2821-8AC40 SIMATIC RF200 RFID reader. 13.56 MHz, 200 mm range, IP67, RS232. NRND — sourced to order via RFQ. MTBF 173 y.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["RFID & Auto-ID"],"specifications":{"MTBF":"173 y","Color":"Ti gray","Depth":"160 mm","IECEx":"No","Width":"80 mm","at DC":"20.4 ... 28.8 V","Height":"41 mm","Material":"PA 12","During Storage":"-40 ... +85 °C","Display Version":"3-color LED","Range / Maximum":"200 mm; Range is dependent on transponder type: observe http://support.automation.siemens.com/WW/view/en/67384964","lifecycle_stage":"mature","During Operation":"-25 ... +70 °C","During Transport":"-40 ... +85 °C","Fastening Method":"4 x M5 screws","Shock Resistance":"EN 60721-3-7 Class 7 M2","at 24 V / typical":"0.13 A","Shock Acceleration":"500 m/s²","at DC / rated value":"24 V","protection class IP":"IP67","Vibrational Acceleration":"200 m/s²","Suitability For Operation":"ISO 15693 transponder (MDS Dxxx), for connecting to PC and control systems (incl. Scan Mode)","For Communications Interface":"M12, 8-pin","Type Of Electrical Connection":"M12, 8-pin","Product Feature / Silicon-Free":"Yes","with RS 232 interface / maximum":"30 m","Operating Frequency / Rated Value":"13.56 MHz","Product Feature / Multitag-Capable":"No","Protocol / With Radio Transmission":"ISO 15693, ISO 18000-3","For Read Access / Per Byte / Typical":"1.2 ms","For Write Access / Per Byte / Typical":"1.2 ms","Standard For Interfaces / For Communication":"RS232","Transfer Rate / With Radio Transmission / Maximum":"26.5 kbit/s"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/390e0872deff73db1d3c1ae9b6ccc111.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1027185&mlfb=6GT2821-8AC40","alternativesUrl":"https://aoctrl.com/api/mcp/products/6GT2821-8AC40/alternatives.json"},"ai":{"faq":[{"question":"What is the read range of this RFID reader?","answer":"The maximum range is 200 mm, but it depends on the transponder type used. Siemens provides a compatibility matrix at the support link referenced in the documentation."},{"question":"What is the MTBF of the 6GT2821-8AC40?","answer":"The listed MTBF is 173 years, based on the solid-state design and passive PA12 housing."},{"question":"Can this reader be used in washdown environments?","answer":"Yes — the IP67 rating means it withstands dust ingress and temporary immersion, making it suitable for food processing, automotive paint, and outdoor conveyor applications."},{"question":"What transponder protocols does it support?","answer":"It supports ISO 15693 and ISO 18000-3 at 13.56 MHz, and is designed for use with Siemens MDS Dxxx transponders."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6GT2821-8AC40","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/6GT2821-8AC40 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}}