What it is and what it does
The Siemens 6GT2811-4AA00-1AA0 is an RF600-series UHF RFID reader operating in the 902-928 MHz band, designed to read RF600 transponders and connect to higher-level communication modules via an RS422 interface. It transmits at 65-500 mW and achieves a typical read range of 6 m, with extended ranges possible per the system manual. Two external antennas connect via RP-TNC connectors, each capable of up to 2000 mW output. The reader supports EPCglobal Class 1 Gen 2 and ISO 18000-6C protocols, with a maximum RF transfer rate of 320 kbit/s. Typical read access takes 1 ms per byte; write access takes 6.3 ms per byte.
Where this reader fits on site
IP65-rated enclosure means this reader handles washdown environments, dust, and rain — mount it directly on a conveyor frame, dock door, or pallet tunnel without an extra cabinet. Mounting options include 4 x M6 screws or VESA 100 pattern with 4 x M4 screws, so it bolts onto standard brackets or a custom plate. Dimensions are 252 x 193 x 52 mm (H x W x D). Power it from 24 VDC nominal (21.6-30 V range). Current draw is 0.395 A typical, 0.47 A max — a standard industrial 24 VDC supply handles it, but check the breaker sizing for multiple readers on one circuit. Antenna cables run from 1 m to 40 m using RP-TNC connectors. The RS422 interface reaches up to 100 m via an 8-pin M12 connector, so the reader can sit close to the antennas while the controller is in the cabinet.
Environmental and reliability data
Operating temperature range is -25 to +55 °C; below -20 °C, a 10-minute warm-up is required before reliable operation. Storage and transport range is -40 to +85 °C. Shock resistance tested to EN 60068-2-27 and EN 60068-2-6, withstanding 500 m/s² shock and 200 m/s² vibration. MTBF is listed at 18 years — a solid number for a fixed-installation reader that doesn't see mechanical cycling. The housing is aluminum with ABS (GF20) plastic in silver/anthracite. It's silicon-free, which matters if the reader goes into a painting or coating line where silicone contamination is a risk.
Lifecycle and sourcing
No official successor is listed, so this remains the current RF600 reader for the 902-928 MHz band. If you're replacing an older Siemens UHF reader, check whether the antenna connectors and RS422 wiring match — the RP-TNC and M12 interfaces are standard on this generation.