TK4100 125KHz/13.56MHz RFID Card

The TK4100 125KHz/13.56MHz RFID Card is a dual-frequency proximity card designed for environments that require flexible identification options. Engineered for day‑to‑day credentialing, this card supports both low‑frequency (125 kHz) and high‑frequency (13.56 MHz) RFID readers, allowing integrators and end users to deploy one physical credential across multiple systems when supported by local readers and encoders. Constructed with a durable polymer body and a printable face, the card withstands normal handling and is suitable for repeated daily use as an access badge, identification card, time and attendance token, loyalty or membership credential, or visitor pass. The card surface accepts common printing methods and slot‑punch accessories used in badge issuance workflows. Provisioning and management are performed with standard RFID encoders and programming tools compatible with the respective 125 kHz and 13.56 MHz technologies; the card is intended to be encoded and read only by equipment that supports those frequencies and compatible protocols. Because implementations vary, verify reader compatibility and encoding requirements with your system vendor before deployment. This card provides a practical, single‑card option for mixed‑technology sites seeking simplified credential handling and an easy migration path between reader infrastructures.