{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6GT2821-4AC10","brand":"Siemens","brandSlug":"siemens","productSlug":"6GT2821-4AC10","canonicalUrl":"https://aoctrl.com/siemens/6GT2821-4AC10","factsUrl":"https://aoctrl.com/api/mcp/products/6GT2821-4AC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC RF200 RF240R RFID reader, 6GT2821-4AC10, RS422 interface (3964R), IP67, -25 to +70 °C, 50 x 50 x 30 mm, integrated antenna.","salesMarkdown":"The Siemens 6GT2821-4AC10 is a SIMATIC RF200 RF240R RFID reader with an integrated antenna, operating at 13.56 MHz and communicating via an RS422 interface using the 3964R protocol. It reads and writes ISO 15693 and ISO 18000-3 transponders (MDS Dxxx family), with a read/write access time of 0.6 ms per byte and a maximum transfer rate of 26.5 kbit/s. The IP67-rated housing (50 x 50 x 30 mm, anthracite PA6.6) withstands washdown environments, making it suitable for production lines where coolant, dust, or hose-down cleaning is routine. The 13.56 MHz HF band gives this reader a typical read range of up to 65 mm, though range depends on the specific transponder type — check Siemens support entry 67384964 for pairing. The RS422 interface supports cable runs up to 1000 m, which matters when the reader sits far from the controller on a long conveyor line. Power draw is 0.05 A typical at 24 V DC (20.4 to 28.8 V range), so it loads the 24 V bus lightly; multiple readers can share one supply without derating. The 3-color LED gives local status without needing to open a panel. MTBF is listed at 430 a, which for a fixed industrial reader means the expected service life comfortably exceeds typical production line refresh cycles. Mounts via two M5 screws through the 50 x 50 mm face; no DIN-rail clip, so plan for direct bracket or machine-frame attachment. Shock resistance per EN 60721-3-7 Class 7M2 (500 m/s²) and vibration resistance at 200 m/s² — rated for direct mounting on vibrating equipment like packaging machines or transfer stations. The M12 8-pin connector handles the RS422 and power in one cable; specify a shielded M12 cordset for runs over a few meters.","metaTitle":"Siemens 6GT2821-4AC10 SIMATIC RF240R RFID Reader, 13.56 MHz,","metaDescription":"Siemens SIMATIC RF200 RF240R RFID reader, 13.56 MHz, RS422, IP67, -25 to +70°C, 50x50x30 mm, MTBF 430 a. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RFID & Auto-ID"],"specifications":{"MTBF":"430 a","Color":"anthracite","Depth":"50 mm","IECEx":"No","Width":"50 mm","at DC":"20.4 ... 28.8 V","Height":"30 mm","Material":"PA6.6","During Storage":"-25 ... +80 °C","Display Version":"3-color LED","Range / Maximum":"65 mm; Range is dependent on transponder type: observe http://support.automation.siemens.com/WW/view/en/67384964","lifecycle_stage":"mature","During Operation":"-20 ... +70 °C","During Transport":"-25 ... +80 °C","Fastening Method":"2 x M5 screws","Shock Resistance":"EN 60721-3-7 Class 7 M2","at 24 V / typical":"0.05 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 communication modules","Type Of Electrical Connection":"M12, 8-pin","Product Feature / Silicon-Free":"Yes","for RS 422 interface / maximum":"1000 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":"0.6 ms","For Write Access / Per Byte / Typical":"0.6 ms","Standard For Interfaces / For Communication":"RS422","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/f4e0a6ccad27c72f7caa3f9f7b34a4ef.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=372701&mlfb=6GT2821-4AC10","alternativesUrl":"https://aoctrl.com/api/mcp/products/6GT2821-4AC10/alternatives.json"},"ai":{"faq":[{"question":"What is the MTBF of this reader?","answer":"The listed MTBF is 430 a (years), which indicates a long expected service life suitable for continuous industrial operation."},{"question":"What transponder types does this reader work with?","answer":"It is designed for ISO 15693 transponders (MDS Dxxx family) and also supports ISO 18000-3. The maximum read range of 65 mm depends on the specific transponder used."},{"question":"What is the supply voltage and current draw?","answer":"Rated supply is 24 V DC (permissible range 20.4 to 28.8 V), with a typical current draw of 0.05 A. This low draw allows multiple readers on a single 24 V bus."},{"question":"Can this reader be used in washdown environments?","answer":"Yes, the IP67 rating means the housing is dust-tight and protected against temporary immersion, so it handles hose-down cleaning and wet production areas."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6GT2821-4AC10","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/6GT2821-4AC10 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}}