What it is and what it fits
The Siemens 6GT2812-2EA00 is an RF622A UHF antenna for the SIMATIC RF600 system, operating in the 865 to 868 MHz ETSI band with linear polarization and a 50 Ω impedance. It's built for the EU frequency allocation and carries an IP65 rating, so it handles washdown and outdoor exposure in logistics gates, conveyor portals, and warehouse dock applications. The antenna has a 0.3 m integral cable terminated with an RP-TNC male connector, and the housing is Pocan plastic in Ti gray, fastened with two M5 screws.
Key ratings and what they mean for fit
The 865 to 868 MHz transmit frequency is the ETSI 3-band UHF RFID allocation used across Europe, so this antenna is the correct choice for EU-based installations — it won't work on the FCC 902-928 MHz band. IP65 means the antenna body is dust-tight and protected against low-pressure water jets from any direction, making it suitable for washdown zones in food processing or outdoor loading bays without a secondary enclosure. The operating temperature range of -20 to +70 °C covers unheated warehouses and refrigerated logistics areas; storage and transport tolerance extends to -40 to +85 °C. Maximum VSWR of 2 and linear radiation pattern with -5 dB at the beam edges (75° vertical, 100° horizontal) mean the antenna delivers a broad, consistent read zone for pallet- or case-level tagging at typical portal distances. The 50 Ω impedance matches standard UHF RFID reader outputs; the RP-TNC connector is the common interface on Siemens RF600 readers and most industrial UHF RFID systems.