What it is and where it fits
The Siemens 6GT2812-1AA08 is a UHF RFID antenna from the SIMATIC RF600 family, designated RF662A. It covers the 865 to 928 MHz frequency band with circular polarization and a gain of 7 dBi, making it suited for global UHF RFID deployments across ETSI and FCC regions. Rated IP67, the antenna handles washdown environments and outdoor exposure across an operating temperature range of -25 to +75 °C. It connects via an RP-TNC male plug and is designed for use with SIMATIC RF600 readers. The housing is Pocan material in Ti gray, and mounting uses 4× M4 screws on a VESA 100 pattern, or an optional articulated bracket via the antenna mounting kit.
Key RF specs and what they mean for your read range
A maximum VSWR of 1.5 indicates good impedance matching across the band — reflected power stays low, so the radiated energy goes into the tag, not back into the cable. That translates to consistent read range without hot spots. The 50 Ω impedance matches standard UHF coaxial infrastructure (LMR-400, RG-213, etc.) without an external matching pad. Radiation pattern is 56° horizontal, 58° vertical — a moderately narrow beam that concentrates energy downrange rather than spilling into adjacent zones. Useful for dock-door portals or conveyor chokepoints where you want to read only the tags passing through the aperture.
Lifecycle and sourcing posture
The product status is Active per Siemens lifecycle data. This is a current-production antenna, not a phase-out or NRND line.