Advanced Dual-Band Technology: This smart card reader supports dual-band 13.56MHz and 125KHz, and can flexibly read NFC and RFID cards, making it ideal for a variety of security applications. Encrypted Card Support: With our advanced decryption technology, encrypted cards can be securely decoded and read, ensuring data processing security and enhancing privacy protection Multi-Card Compatibility: Efficiently copies and reads multiple types of smart cards, ideal for applications such as access control systems, attendance tracking, etc Product name: NFC access control reader Communication/power supply: USB Type-C interface Product function: Support ID/IC firewall, ID multi-frequency, encryption and decoding, etc. Adaptive frequency: IC (13.56MHZ) ID (125-250KHZ) (The product appearance and printed words depending on the batch, but this does not affect use) colour: Black material: Plastic Package Contents: 3 x NFC Card Reader 3 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.