Chameleon Ultra RFID NFC Tool | 125kHz + 13.56MHz

Chameleon Ultra is a powerful portable RFID and NFC research tool for learning, development, testing, and authorized security research. Unlike single-frequency RFID devices, Chameleon Ultra combines 125 kHz LF RFID and 13.56 MHz HF NFC/RFID capabilities in one compact device.

It can be used by Bangladeshi engineering students, university students, electronics hobbyists, embedded developers, RFID/NFC researchers, cybersecurity learners, and professional engineers who need a portable platform for studying contactless card technologies.

The Chameleon Ultra supports various 13.56 MHz ISO14443A-based cards and tags, including MIFARE Classic and selected MIFARE Ultralight/NTAG families. Its 125 kHz side supports technologies including EM410x, T5577 and HID Prox, with support depending on firmware and application functionality.

The hardware uses an nRF52840 ARM Cortex-M4F microcontroller, with BLE and USB connectivity. The Ultra also includes dedicated hardware for HF 13.56 MHz operation and LF 125 kHz operation.

For developers, the open-source ecosystem includes ChameleonUltraGUI, CLI tools and other compatible applications, allowing users to manage the device, update firmware and work with supported RFID/NFC functions.

Features:

• Dual-frequency RFID/NFC platform
• 125 kHz Low Frequency RFID
• 13.56 MHz High Frequency NFC/RFID
• nRF52840 ARM Cortex-M4F MCU
• Bluetooth Low Energy connectivity
• USB Type-C interface
• Portable rechargeable design
• RFID/NFC card and tag reading on supported technologies
• Supported card/tag emulation capabilities
• MIFARE Classic research capabilities
• EM410x and T5577 support
• Open-source firmware and software ecosystem
• Compatible with ChameleonUltraGUI and CLI
• Designed for electronics education and authorized security research
• Compact design suitable for field testing and laboratory work

Specifications:

The official hardware documentation identifies the Ultra as a two-board design containing HF 13.56 MHz and LF 125 kHz antennas, USB-C connectivity and a rechargeable battery.

Note: Battery capacity and some hardware specifications can differ between hardware revisions and sellers. The current reference information lists a 90 mAh battery on one hardware specification page, while other community documentation lists different capacities, so sellers should specify the exact hardware revision supplied.

What Can You Use Chameleon Ultra For?

🎓 For Students

Chameleon Ultra is useful for learning about:

• RFID technology
• NFC communication
• 125 kHz RFID systems
• 13.56 MHz contactless systems
• ISO14443A
• MIFARE technology
• Embedded systems
• Bluetooth Low Energy
• Wireless communication
• Hardware and firmware development

👨‍💻 For Engineers & Developers

It can be used for:

• RFID reader testing
• NFC reader compatibility testing
• Protocol experimentation
• Reader troubleshooting
• Embedded-system development
• Reproducible tag emulation
• Contactless system prototyping
• Authorized security testing

🔐 For Security Research

Security researchers can use the device to investigate supported RFID/NFC technologies in controlled and authorized environments. The project documentation includes MIFARE Classic research functionality and several supported analysis/decryption workflows.

Chameleon Ultra vs Chameleon Lite

The major hardware difference is that the Ultra includes an MFRC522 that enables HF 14A card reading/writing, while the Lite does not include this chip.