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This dual-technology proximity reader is designed for maximum compatibility in mixed or legacy access control environments. Supporting both the 26-bit H10301 format and the 26-bit EM format, this reader is an ideal solution for facilities that need flexibility without replacing existing credentials.
Operating at 125 kHz, the reader seamlessly reads HID-compatible H10301 26-bit proximity cards and key fobs, as well as EM4100 / EM4102 26-bit credentials, making it well-suited for upgrades, system expansions, and multi-vendor deployments.
The 26-bit H10301 format is one of the most widely deployed access control formats in North America. It uses a facility code (0–255) and card number (1–65,535) structure and is supported by nearly all major access control systems.
Common H10301-compatible credential part numbers include:
This reader ensures reliable reads with standard H10301 26-bit proximity cards and key fobs, making it a dependable choice for existing HID-based systems.
In addition to H10301, this reader also supports the 26-bit EM format, commonly used in cost-effective and international access control systems. EM technology operates at 125 kHz and is widely used in standalone and networked systems that require simple credential identification.
Common EM format credential references include:
By supporting both formats in a single reader, this device eliminates compatibility concerns when different credential types are already in circulation.
This dual-technology reader allows organizations to continue using existing H10301 and EM credentials while planning future system changes at their own pace.
AuthorizID specializes in access control credentials, readers, and compatibility guidance. We help customers avoid costly mistakes by ensuring the reader and credential format are correctly matched before deployment.
To make the process easy, we offer free sample cards and key fobs so you can test compatibility before committing to a full order.
