Siemens 6GT2810-2AC10 SIMATIC RF640L SmartLabel PET, 902-928

The Siemens 6GT2810-2AC10 is a SIMATIC RF640L SmartLabel PET RFID tag built for the RF600 system. It operates in the 902–928 MHz UHF band (FCC) and follows the EPCglobal Class 1 Gen 2 / ISO 18000-63 protocol, so it talks to any standard UHF reader that speaks that protocol — not just Siemens hardware, though the system manual notes range is reader-dependent and overrange is possible. The tag measures 50 mm wide by 22.5 mm deep and only 1.6 mm thick — essentially a label form factor. It is white, with a PET top side, and it is printable via thermal transfer process. That means you can put barcodes or human-readable text on it alongside the RFID chip, which is useful when a line worker needs to visually confirm what the reader already picked up. It is IP67 rated, so the tag body and the inlay survive washdown, dust, and the kind of wet-grit environment you find on a cement kiln feed line or a quarry conveyor. The temperature range outside read/write access is -25 to +85 °C, and during read/write it handles -20 to +85 °C — wide enough for outdoor storage and most process areas short of direct flame.