The frequency range of low-frequency electronic tags is 30 kHz ~ 300 kHz, and the typical working frequencies are 125KHz and 133KHz. Low-frequency tags are generally passive tags, and their working energy is obtained from the radiation near field of the reader coupling coil through inductive coupling. When transmitting data between the low-frequency tag and the reader, the low-frequency tag should be located in the near-field area radiated by the reader antenna. The reading distance of low-frequency tags is generally less than 1 meter. Typical applications of low-frequency tags include: animal identification, container identification, tool identification, electronic lock anti-theft (car key with built-in transponder) and so on.
The frequency range of high-frequency electronic tags is generally 3 MHz ~ 30 MHz, and the typical working frequency is 13.56MHz. Radio frequency tags in this frequency band should be classified as low-frequency tags, because their working principles are exactly the same as those of low-frequency tags, and they all work by inductive coupling. On the other hand, according to the general division of radio frequency, its working frequency band is also called high frequency, so it is often called high frequency tag. For the convenience of description, we call it IF RF tag. The reading distance of IF tag is generally less than 1 m. High-frequency electronic tags are used in electronic tickets, residential property management, second-generation electronic identity, building access control, container identification and so on.
UHF RFID tags have a wide range of application scenarios, which can be used in asset management, supply chain management, intelligent warehouse management, vehicle management and so on. The working frequencies of UHF tags are generally 850 MHz ~ 9 10 MHz and 2.45GHz. UHF tags are generally passive tags, and their working energy is obtained from the radiation near field of the reader coupling coil through electromagnetic backscattering. When transmitting data between UHF tag and reader, UHF tag should be located in the far-field area radiated by reader antenna. The reading distance of UHF tags is generally less than 1 m (the maximum reading distance is 1.5 m).
The above information is for reference only. If necessary, it is recommended that you consult an RFID professional.