Block 0 UID Changeable Keychain - Premium RFID/NFC Keyfob

High-Frequency Rewritable
13.56MHz RFID/NFC chip supports dynamic UID modification for secure access control and data updates.
Durable Epoxy Encapsulation
Industrial-grade epoxy resin ensures waterproof, shockproof, and anti-corrosion performance for long-term outdoor use.
Dual-Frequency Compatibility
Works seamlessly with both 125KHz (legacy systems) and 13.56MHz (NFC smartphones, contactless payments).
Ultra-Slim & Lightweight
Compact 25mm diameter design with keyring attachment for effortless portability on keys or lanyards.
Multi-Scenario Application
Ideal for office access, hotel room cards, gym lockers, public transport, and IoT device pairing.
Batch-Deploy Ready
Pre-configured for bulk procurement with OEM customization options (UID pre-coding, logo printing).
Developer-Friendly
Supports ISO14443A/MIFARE protocols for seamless integration with existing RFID infrastructure.