News filter by H10301

Before you can reorder access cards, replace a lost fob, or add new users, you need to answer one basic question: Does your system run on 125 kHz or 13.56 MHz? This guide explains the difference between low frequency and high frequency RFID credentials, shows you several practical ways to tell which one you have, and covers when it makes sense to upgrade from prox to smart card.

This guide explains what the H10301 format is, how the 26 bits are structured, what the facility code & card number mean, which readers & panels accept it, and how to order H10301 cards & fobs that drop into your existing system without reprogramming a thing. Whether you are replacing lost badges, expanding a site, or identifying what you already have, this is the reference page for the standard prox format.