125 kHz RFID access card (EM-Marine), thin

125 kHz RFID Access Card (EM-Marine)

125 kHz RFID cards are contactless access cards based on radio-frequency identification technology, commonly used in security systems, for example for door access, transport systems, libraries or workplace check-in. The term “China chip” may refer to lower-cost or generic RFID tags/chips manufactured in China and widely used in a variety of budget solutions.

Product Description:

Frequency:
125 kHz (LF – Low Frequency)

Chip:
Chinese-made clonable chip, typically one of the following:

• TK5200 – rewritable clone chip (TK4100)

Material:
PVC plastic (white, printable)

Dimensions:
85.5 × 54 mm (ISO/IEC 7810 standard – credit card size)

Read range:
Up to 10 cm (depending on the reader)

Features and Benefits:

• Passive card – requires no internal power source (no battery)

• Clonable (with T5577) – can be programmed to different formats

• Chip ID reading – used for UID (Unique ID) identification only

• Durable and waterproof – suitable for everyday use

• Universal compatibility – works with most 125 kHz readers

• Low-cost and suitable for mass production

• Printed DEC number and Wiegand 26bit number

Typical Applications:

• Door access in access control systems

• Time and attendance systems

• Apartment building door entry systems

• Parking systems

• Animal and object identification

Notes:

• TK4100 and EM4100 are read-only – the UID is factory-programmed and cannot be changed.

• T5577 allows the card to be reprogrammed multiple times, making it useful for cloning and system testing.

• These chips are not compatible with 13.56 MHz (NFC) systems!