ISO/IEC (International Standards Organization and International Electrotechnical Commission)

18000–1: Generic air interfaces for globally accepted frequencies

18000–2: Air interface for 135 KHz

18000–3: Air interface for 13.56 MHz

18000–4: Air interface for 2.45 GHz

18000–5: Air interface for 5.8 GHz

18000–6: Air interface for 860 MHz to 960 MHz

18000–7: Air interface at 433.92 MHz 

EPCglobal Inc

HF (13.56 MHz)

13.56 MHz ISM Band Class 1

UHF (868 – 928 MHz)

UHF Class-0

UHF Class-1 Generation-1 (Class-1 Gen-1)

UHF Class-1 Generation-2 (Class-1 Gen-2) [3]