ACR122U-A9 USB NFC Card Reader Writer - 13.56MHz RFID Smart Card Reader

ACR122U-A9 USB NFC Card Reader Writer The ACR122U-A9 NFC Card Reader is a USB contactless smart card reader for 13.56MHz RFID and NFC projects. It is useful for reading supported NFC tags, RFID cards, smart cards, and contactless cards for testing, access control, attendance systems, payment demos, and identification projects. This reader connects to a computer through USB and supports common NFC and RFID card applications. It is a practical choice for developers, students, makers, and technicians working on PC-linked NFC systems. Selected Style ACR122U-A9 Why Choose This NFC Reader? Works with 13.56MHz NFC and RFID card projects. USB connection for easy PC-linked use. Supports contactless card reading and writing. Useful for access control, ID systems, attendance, and testing. Compact white case for desk or workbench use. Good for students, developers, and electronics project builders. Common Applications NFC tag reading and writing RFID card testing Access control systems Time attendance projects Smart card learning projects PC-linked ID verification Library, ticketing, and membership systems Arduino, Raspberry Pi, or desktop NFC project testing Note: Cards, tags, drivers, software, and SDK files may not be included. Technical Specifications Product Type USB NFC card reader / writer Selected Style ACR122U-A9 Working Frequency 13.56MHz Interface USB Protocol Support USB CCID and PC/SC Supported Standards ISO/IEC 18092 NFC, ISO 14443 Type A and B, MIFARE, FeliCa, and NFC tags Read / Write Speed 106kbps, 212kbps, up to 424kbps USB Speed USB Full Speed up to 12Mbps Operating Distance Up to 50mm, depending on card or tag type Antenna Size 50mm x 40mm Material Polycarbonate Color White Size 98mm x 65mm x 12.8mm Weight About 70g Operating Temperature 0°C to 50°C Setup Notes Connect the reader to your computer through USB. Depending on your operating system and software, you may need to install the correct driver, PC/SC tools, or NFC reader software before use. Place the NFC card or tag near the reader surface. Reading distance may change depending on the card type, tag size, antenna design, and software used. Recommended Add-ons RFID and NFC modules RFID cards and NFC tags Raspberry Pi boards Arduino boards and modules FAQ What is the ACR122U-A9 used for? It is used for reading and writing supported 13.56MHz NFC tags, RFID cards, and contactless smart cards. Does it connect through USB? Yes. The reader connects to a computer through USB. Can it read MIFARE cards? Yes. It supports MIFARE and other supported 13.56MHz contactless card types. What is the reading distance? The operating distance is up to about 50mm, depending on the card or tag used. Is software included? Software may not be included. You may need to install compatible drivers or NFC reader tools based on your system and project.