Product overview A contactless smart card operating at 13.56MHz, designed for seamless integration with door access control systems. Supports read, write, and data copying while providing a unique encrypted identifier for each card. Compliant with ISO/IEC 14443A protocol and compatible with MIFARE Classic 1K systems. Key benefits Reliable compatibility: Works with a wide range of door access control systems that support 13.56MHz contactless cards and MIFARE Classic 1K. Secure identification: Each card carries a unique encrypted 4 byte UID for consistent identification and access tracking. Flexible data handling: Supports read, write, and copy operations so system administrators can update card data and manage access permissions. Long service life: Rated for over 100,000 rewrite cycles, suitable for frequent updating in traffic environments. Standards compliant: ISO/IEC 14443A compliance ensures predictable behavior with compatible readers and controllers. Features Working frequency: 13.56MHz Compatibility: Fully compatible with MIFARE Classic 1K, 4 byte UID format, and systems using ISO/IEC 14443A protocol Memory: 1K Byte memory organized in 16 sectors, each sector containing 4 blocks Read/write capability: Supports reading, writing, and copying of card memory Unique ID: Each card contains a unique encrypted ID number and can be reprogrammed as required Durability: Designed for repeated rewriting, supporting over 100,000 rewrite cycles Typical applications Office and building access control: Issue cards to employees and manage door permissions through existing access control systems. Time and attendance systems: Use cards for employee clock in and clock out where frequent updates to permissions or stored data are required. Facility and locker management: Provide temporary or long term access cards for lockers, storage rooms, or shared facilities. Technical specifications Frequency: 13.56MHz Protocol: ISO/IEC 14443A compliant Compatibility: MIFARE Classic 1K compatible UID: 4 byte encrypted unique ID, reprogrammable Memory: 1K Byte, organized in 16 sectors of 4 blocks Read/write cycles: Over 100,000 rewrites Why choose this card This card provides a practical balance of compatibility, security, and durability for access control and related applications. It integrates with MIFARE Classic 1K infrastructures, supports routine data updates, and offers a number of rewrite cycles for long term use without frequent replacement.