What this reader is and where it fits
The Siemens 6GT2811-4AA00-0AA1 is a fixed-mount UHF RFID reader from the RF600 family, operating in the 865–868 MHz band (ETSI EN 302 208) with a standard read range of 6 m, extendable per the RF600 System Manual. It communicates via RS422 over an M12 8-pin connector and draws 0.47 A maximum at 24 VDC. The IP65-rated aluminum/ABS enclosure (silver/anthracite) survives washdown environments, making it a candidate for dock-door portals, conveyor gantries, and outdoor gate-read points where moisture or dust is present.
Key ratings and what they mean for fit
The 865–868 MHz operating frequency locks this reader to the European UHF RFID band. It will not operate on FCC (902–928 MHz) or other regional allocations without a different hardware variant. The 6 m maximum range is typical for a single-antenna portal; the reader supports up to two external antennas via RP-TNC connectors, with cable runs up to 40 m. Per-antenna transmit power is capped at 1200 mW ERP, with the reader output adjustable between 65 and 500 mW. The 19-year MTBF figure (per Siemens reliability data) is a useful benchmark for maintenance planning on a continuous-duty line — it suggests the power supply and RF front-end are conservatively rated, but field life depends on ambient temperature and shock exposure.
Integration and mounting
Mounts via 4× M6 screws or a VESA 100 pattern (4× M4). The 252 × 193 × 52 mm footprint fits under a standard conveyor hood or on a bracket above a dock door. The M12 8-pin communication interface carries RS422; cable length to the controller is limited to 100 m. The reader is silicon-free and multitag-capable, handling EPCglobal Class 1 Gen 2 / ISO 18000-6C transponders. Below −20 °C ambient, a 10-minute warm-up is required before reliable operation.