RFID access blank card 125khz t5577 tk4100 iso rfid proximity pvc smart chip card custom

125 kHz RFID card refers to a type of RFID card that operates on the 125 kHz frequency. These cards are commonly used for access control systems, identification purposes, and other applications that require proximity-based authentication.125 kHz RFID cards utilize proximity-based technology, also known as low-frequency (LF) RFID. The card needs to be in close proximity to the RFID reader (usually within a few centimeters) for communication to occur.

125 kHz RFID cards can be either read-only or read-write. Read-only cards typically have a unique identification number (UID) programmed into them during the manufacturing process and cannot be modified. Read-write cards, on the other hand, allow for read and write operations, enabling data to be stored and updated on the card.

125 kHz RFID cards come in various form factors, including clamshell cards, ISO cards, key fobs, and adhesive tags. These different card types offer flexibility in terms of their physical appearance and how they can be used or attached to objects.

These cards are commonly used for access control systems, such as building entry, parking lot access, and secure areas. They are also used for identification purposes, membership cards, time and attendance tracking, and other applications that require proximity-based authentication.

In addition to 125khzd low frequency cards, we also have 13.56 MHz (high-frequency, HF) and UHF (ultra-high-frequency) RFID cards, which offer enhanced security and longer read ranges.