ACS ACR1251U USB NFC Reader II

The ACR1251U is a compact, USB-powered NFC reader and writer designed for secure, PC-linked contactless applications. It supports a wide variety of NFC cards and tags and includes a Secure Access Module (SAM) slot for enhanced security.

Key Features

• USB-powered – Uses USB 2.0 Full Speed (CCID-compliant), no external power supply needed.

• Broad card support – Works with ISO 14443 Type A & B, MIFARE Classic/Plus/DESFire, FeliCa, and NFC Forum Types 1–4.

• High security – SAM slot for cryptographic key storage and secure authentication.

• Fast operation – Contactless read/write speeds up to 424 kbps with a read range of up to 50 mm.

• User feedback – Bi-color LED and buzzer for status indication.

• Upgradeable – Firmware can be updated via USB for future compatibility.

• Developer-friendly – Supports PC/SC and CT-API standards for easy integration into various applications.

Technical Specifications

Typical Applications

• Secure access control systems

• Contactless payments and ticketing

• Loyalty and membership programs

• Network logon and authentication

• E-healthcare and e-government ID verification

• NFC-based marketing and smart posters