This CC debugger ZIGBEE device is needed to flash the Wireless Zigbee CC2531 Sniffer Bare Board. So this makes that the device can act as a Zigbee Gateway.
Read the tutorial for creating your own DIY Zigbee Gateway. On a high level: buy the hardware and prepare this hardware for installation. After that, install the software and you are ready to go with the Domoticz plugin.