What it is and where it fits
The 6GT2811-7AD20-1AA0 is a SIMATIC RF690R FCC UHF RFID reader from the Siemens RF600 family. It reads and writes passive UHF transponders over four antenna ports, communicating via Ethernet RJ45 with Power over Ethernet (PoE) or a separate 24 V DC supply. One digital input and one digital output are onboard for direct sensor or actuator connection at the read point.
Compliance and regulatory
RoHS compliant. REACH Article 33 disclosure applies: lead (CAS 7439-92-1) above 0.1% w/w in certain components. Export control classification is AL: N / ECCN: N, meaning no special licensing is required for standard international trade. The FCC variant is certified for US operation; the reader ships without antennas or accessories — those are ordered separately to match the application frequency and gain requirements.