ACS ACR122U — USB NFC Reader
Table of Contents
ACR122U
Product Overview#
The ACR122U is a PC-linked contactless smart card reader/writer based on 13.56 MHz RFID technology. Compliant with the ISO/IEC 18092 NFC standard, it supports MIFARE®, ISO 14443 Type A/B, and all four NFC tag types. It is a PC/SC and CCID compliant plug-and-play USB device with access speed up to 424 Kbps and USB Full Speed (12 Mbps) interface. Operating distance is up to 50 mm.
Key Specifications#
| Specification | Details |
|---|---|
| Operating Frequency | 13.56 MHz |
| Operating Distance | Up to 50 mm (depending on tag type) |
| Read/Write Speed | 106 Kbps / 212 Kbps / 424 Kbps |
| USB Interface | USB Full Speed (12 Mbps) |
| Supply Voltage | 5V DC regulated |
| Supply Current | 200 mA max / 100 mA normal / 50 mA standby |
| Antenna Size | 50 mm × 40 mm |
| Dimensions | 98 × 65 × 12.8 mm |
| Weight | 70 g |
| Operating Temperature | 0°C – 60°C |
| Humidity | Max. 90% (non-condensing) |
| MTBF | 408,500 hrs |
| LED | 1 bi-color Red/Green (user-controllable) |
| Buzzer | Monotone (user-controllable) |
| SAM Slot | 1 × ISO 7816-3 (optional) |
| Compliance | PC/SC, CCID, CE, FCC, RoHS |
Key Features#
- USB Full Speed Interface
- CCID and PC/SC compliant, plug-and-play
- Read/write speed up to 424 Kbps
- Built-in antenna, card reading distance up to 50 mm
- Supports all 4 NFC tag types (ISO/IEC 18092)
- Supports MIFARE Ultralight C, MIFARE Plus, DESFire EV1
- Supports 3 NFC modes: Reader/Writer, Card Emulation, Peer-to-Peer
- Built-in anti-collision (1 tag at a time)
- User-controllable bi-color LED and buzzer
- Optional ISO 7816-3 SAM slot for enhanced security
- Available in module form for POS/access control integration
- Supports PC/SC and CT-API
Supported Tag Types#
| Tag / Card Type | Standard |
|---|---|
| NFC Tag Type 1 | ISO 14443 Type A |
| NFC Tag Type 2 | ISO 14443 Type A |
| NFC Tag Type 3 | FeliCa |
| NFC Tag Type 4 | ISO 14443 Type A and B |
| MIFARE Classic (1K, 4K, MINI) | ISO 14443 Type A |
| MIFARE Ultralight / Ultralight C | ISO 14443 Type A |
| MIFARE Plus | ISO 14443 Type A |
| MIFARE DESFire / DESFire EV1 | ISO 14443 Type A |
| FeliCa | ISO 18092 |
| ISO 14443 Type A cards | ISO 14443 |
| ISO 14443 Type B cards | ISO 14443 |
Supported Operating Systems#
- Windows CE 5.0, Windows Embedded Compact 6.0 / 7
- Windows XP, Vista, 7, 8, 8.1, 10
- Windows Server 2003 / 2008 / 2012 / 2016
- Linux®
- macOS®
- Solaris
- Android™ 3.1 and later
📄 Product Datasheet#
| Resource | Link |
|---|---|
| 📄 ACR122U Datasheet (PDF) | Download PDF |
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