What it is and what it does
The Siemens 6GT2811-3BA00-0AA0 is an RF600-series RFID reader head operating in the 865-868 MHz UHF band, designed to read RF600 transponders and connect to Ethernet networks via its push-pull RJ45 interface. Its 8 m maximum read range (extendable per the RF600 System Manual) and adjustable transmit power from 50 to 1000 mW make it suitable for warehouse gate, conveyor, and pallet-tracking applications where tags pass at distance. Rated IP65, the aluminum and ABS (GF20) housing withstands washdown and dusty environments — expect this on a production floor or in a cold storage dock, not a cleanroom.
Key ratings and what they mean for fit
MTBF of 14 years at 24 VDC. Draws 1.5 A at 24 VDC maximum, 0.45 A typical. The M12 4-pin power connector (female) means you need a 24 V supply that can deliver the peak, not just the typical — factor the 1.5 A into your panel power budget. Two digital inputs and two digital outputs on an M12 8-pin connector allow local sensor feedback or actuator control without a separate I/O block — useful for a light curtain or ejector tied to the read event. Operating temperature range of -25 to +55 °C, with a required 10-minute warm-up below -20 °C. Storage and transport range is -40 to +85 °C. The shock resistance (500 m/s²) and vibration (200 m/s²) per EN 60068-2-27 and EN 60068-2-6 mean it survives forklift bumps and conveyor vibration.
Mounting and integration
Mounts via 4 x M6 screws or VESA 100 pattern (4 x M4 screws). The 252 x 193 x 52 mm (H x W x D) footprint fits under a conveyor or on a stand — plan the bracket before wiring. External antenna connects via RP-TNC; antenna cable length must be between 1 m and 40 m. Polarization is circular internal, external depends on the antenna chosen. The optional external antenna extends flexibility for tight spaces. Communications interface is push-pull RJ45 for Ethernet connectivity. The 3-color LED display gives local status — green for good read, red for fault, yellow for warning — without needing a screen.
Sourcing and lifecycle
The part is silicon-free, which simplifies compliance documentation for certain industries (automotive paint lines, semiconductor fabs) that restrict silicones.