ACS ACR3901U-S1 Wireless Bluetooth Smart Card Reader (ACR3901U-S1ACSA)

The ACS ACR3901U-S1 (Manufacturer Part Number: ACR3901U-S1ACSA) is a compact contact smart card reader equipped with both wireless Bluetooth 4.0 and wired Micro-USB connectivity.

This battery-powered device links full-sized smart cards to mobile smartphones, tablets, and computers without requiring a physical cable connection. It handles card verification, secure network logins, and identification tasks across mobile and desktop applications.

Features

• Dual Interface Link: Operates wirelessly via Bluetooth Low Energy (Bluetooth 4.0) or through a wired connection via the included detachable Micro-USB cable.

• Data Security: Features hardware-level AES-128 encryption to secure transmitted data between the smart card and the paired host device.

• Card Frameworks: Supports standard full-sized ISO 7816 Class A, B, and C (5V, 3V, 1.8V) cards, microprocessor cards utilising T=0 or T=1 protocols, and common memory cards.

• Power Infrastructure: Runs on an internal rechargeable Lithium-ion battery that charges directly through any standard 5V USB port.

System Compatibility

• Windows: 7, 8, 8.1, 10, and 11

• macOS: 10.7 and newer

• iOS: Version 8.0 and newer

• Android: Version 4.3 and newer

• Linux & Solaris

Technical Specifications

Feature	Details
Wireless Protocol	Bluetooth Low Energy (Bluetooth 4.0)
Wired Protocol	USB Full Speed (Micro-USB connector)
Read/Write Speed	Up to 600 Kbps
Encryption	AES-128 bit algorithm
Battery Type	Rechargeable Lithium-ion
Dimensions	94.0 mm × 60.0 mm × 12.0 mm
Weight	30.8 grams
Certifications	EMV Level 1 (Contact), PC/SC, CCID, CE, FCC, RoHS, REACH, MIC, VCCI