Frequency is one selection parameter
An operating frequency identifies the radio band, but does not fully specify the command set, memory structure or security behavior. Two credentials at 13.56 MHz can require different reader software. Begin with the application transaction and the installed reader, then confirm the complete IC configuration.
| Technology | Typical catalog reference | Selection considerations |
|---|---|---|
| LF | 125 kHz credentials | Modulation, identifier format and installed reader compatibility |
| HF | 13.56 MHz | Distinguish proximity, vicinity and proprietary interfaces |
| NFC | 13.56 MHz within the HF band | Tag type, NDEF content, handset support and application behavior |
| UHF | Regional operation within the relevant UHF specification | Reader region, air interface revision, antenna, item material and inventory process |
Low frequency identification
The Roxtron LF range includes options for installed identification and access systems. A specified 125 kHz carrier does not make all LF chips interchangeable: modulation, data coding and identifier organization may differ. NFC phones cannot read a 125 kHz credential through their NFC interface. Verify a replacement with the exact reader and host format.
HF and NFC
HF covers multiple technologies. ISO/IEC 14443 and ISO/IEC 15693 are distinct standards families. NFC uses 13.56 MHz and defines interoperable behavior across supported interfaces and tag types. An NFC application still needs appropriate encoded content and device support. NFC Forum: NFC Technology, technical overview.
For example, NTAG213 is a Type 2 IC and ICODE SLIX2 is associated with Type 5 operation. These labels describe different underlying implementations. Select the tag for the required device interaction and memory model. NXP: NTAG213, NTAG215 and NTAG216 data sheet; NXP: ICODE SLIX2 product specification.
UHF and regional operation
Roxtron’s UHF label range is designated 840–960 MHz. That catalog label must not be treated as permission to transmit across the entire range. Reader settings and antenna qualification must match the deployment country and applicable equipment requirements.
Standards revisions also matter. The February 2026 GS1 Gen2 release 3.0.1 specifies 860–930 MHz, while its referenced ISO/IEC 18000-63 title covers 860–960 MHz. Record the applicable protocol revision and the exact IC operating range rather than assuming every document uses the same band description. GS1 EPC Gen2 Air Interface Protocol, release 3.0.1, February 2026.