50-Black M-I-F-A-R-E Classic 1K Keychain RFID IC S50 Key Fob ISO14443A 13.56MHZ NFC Tags F08 Token Key for Electronic Smart Door Lock

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• 1. High Capacity 1K Storage & Classic RF Technology 50 pieces per pack Equipped with M-ifare Classic 1K chip, it has a storage capacity of 1024 bytes, supports ISO 14443A standard, operates at 13.56MHz high - frequency communication, has a read - write distance of 0.5 - 10cm, and is compatible with mainstream RFID devices such as access control systems, time - attendance machines, and campus one - card - through systems. It ensures stable and fast data transmission.
• 2. Durable Black Keychain Design Made of ABS+PC wear - resistant material, the black matte surface is scratch - resistant and drop - resistant. The key - ring - style portable structure can be directly hung on keychains, backpacks, or name tags. It is small and lightweight (with dimensions of approximately 40*30*3mm), takes up little space for daily carrying, and is suitable for business or commuting scenarios.
• 3. Wide Application Compatible with NFC mobile phones (requiring M-ifare read - write function support) and traditional RFID card readers. It can be used for tasks like copying access control cards (confirmation of unencrypted original cards required), small - amount payments in e - wallets, and as library borrowing cards. It meets the needs of multiple scenarios such as property management, enterprises, campuses, and public transportation.
• 4. Secure Encryption for Data Protection Supports the M-ifare Classic standard encryption algorithm. With 16 independent sectors that can be encrypted separately, it prevents data tampering or leakage. It is suitable for time - attendance and access control scenarios that require privacy protection, providing a basic guarantee for personal and corporate data security.
• 5. Ready - to - Use & Considerate After - sales Service The chip is initialized at the factory, so it can be used directly without complex settings. The package includes 1 black keychain RFID card + user guide. If there are compatibility issues, customers can contact the customer service for technical support. A 30 - day no - reason return and exchange service and a 1 - year warranty are provided.