UNIQUE TK4100 125 kHz Contactless RFID Card with Internal Number

UNIQUE TK4100 125 kHz Contactless RFID Card with Internal Number

A contactless card compliant with the UNIQUE 125 kHz standard, equipped with a reliable TK4100 chip. It is a universal and versatile tool designed for access control. It supports read-only operation—the card has a factory-encoded unique number that cannot be overwritten or changed. This makes it an ideal solution for access control systems and user identification. The product is an excellent choice for projects using RFID readers connected to Arduino, ESP8266, ESP32, and Raspberry Pi.

Key Technical Features

• Technology: UNIQUE 125kHz
• Chip used: TK4100
• Card type: Read-only
• Data retention: up to 10 years

Price is for 1 unit.

Examples of Applications

• Access control systems in offices and workplaces
• Employee time and attendance tracking
• User identification in alarm systems and intercoms
• Electronic projects and prototypes using microcontrollers
• Loyalty systems and customer identification

Benefits

• High reliability—guaranteed trouble-free operation in security systems
• Long service life—data retention guaranteed for up to 10 years
• Versatility—seamless compatibility with popular 125 kHz readers
• Security—the factory-assigned number eliminates the risk of accidental overwriting or alteration of the identifier
• Ease of integration—quick deployment in existing and new projects