UPDATE: The Eagle-200 being US originated may only support US radio frequency for Zigbee. I can see they do sell to Australia as well which uses the same frequency as the US. 784 MHz in China, 868 MHz in Europe and 915 MHz in the USA and Australia
Zigbee is the same frequency for home automation in the US, EU, China, and Australia (most places, really). 2,4 GHz. It is Zwave that differs by region, because it falls into the frequency bands which may be used by local mobile phone or first responder communications, which differ from country to country.
This is why you can buy the Orvibo or Xioami zigbee devices from China, for example, and use the same one in the UK or the US. 
That said, the zigbee specification does allow for “manufacturer proprietary“ profiles, including changing frequency. The UK military recently released some frequencies which are now being used for this energy project. But it’s not that it’s specific to the UK region, there isn’t anything else in the UK using that now for zigbee home automation as it was previously reserved to the military there. Standard zigbee for home automation is still 2,4 GHz in both the US and UK.