Expand your access control and authentication networks with this high-quality Pack of 4 Blank 13.56MHz RFID Cards. Specifically engineered to offer complete compatibility with the popular RC522 and PN532 reader/writer modules, each smart card features a built-in high-frequency antenna and an authentic MIFARE Classic 1K architecture. With 1 KB of internal EEPROM storage split into secure sectors, these cards allow you to read and write custom data strings, change passwords, and save secure metrics. They are the ideal bulk choice for company attendance logs, student ID badges, smart hotel keycards, and custom automated locker locks. [
Key Product Features
- Complete RC522 Compatibility: Operating at the precise 13.56 MHz proximity frequency, these cards are guaranteed to link perfectly with standard MFRC522 and PN532 sensor networks.Â
- 1KB Secure EEPROM Storage: Features a spacious 1024-byte storage core divided into 16 independent sectors, with each sector protected by dual distinct access keys to prevent data spoofing.Â
- Pre-programed Unique 4-Byte UID: Every single card ships with a unique factory-locked 4-byte identification number pre-flashed, enabling instant plug-and-play white-listing for smart locks.
- Premium Printable PVC Build: Crafted from smooth, standard CR80-sized white PVC with clean, flat edges, making them fully compatible with standard dye-sublimation card printers for printing custom text, photos, or logos.Â
- Passive Battery-Free Tech: Uses advanced magnetic induction to draw power directly from your reader’s electromagnetic field, eliminating the need for internal batteries

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