The EZSync CC2531 USB dongle enables a PC interface to 802.15.4 / ZigBee applications. The dongle can be plugged directly into your PC and can be used as an IEEE 802.15.4 packet sniffer or for other purposes. With the CC2531 USB Firmware Library available on the web you can develop your own software to utilize this part. To program the debugger, an external programmer (e.g. EZSync106 or CC Debugger ) is required. The USB dongle can be used as a reference module for prototyping of USB devices and for testing the RF performance of CC2531 with a small size PCB antenna.The USB Dongle can be used as a development platform for USB and RF applications. The dongle comes preprogrammed with software that lets the dongle operate as a packet capture device for the SmartRF Packet Sniffer. The CC2531 is Texas Instrument’s second generation ZigBee/IEEE 802.15.4 compliant System-on-Chip with an optimized 8051 MCU core and radio for the 2.4 GHz unlicensed ISM/SRD band along with built-in full speed USB 2.0 compliant interface. This device enables industrial grade applications by offering state-of-the-art noise immunity, excellent link budget, operation up to 125 degrees and low voltage operation. In addition, the CC2531 provides extensive hardware support for packet handling, data buffering, burst transmissions, data encryption, data authentication, clear channel assessment, link quality indication and packet timing information.