'Return device specific state attributes.'

@property
def device_state_attributes(self):

    attr = {}
    if (not self.available):
        return attr
    for (node, data) in HM_ATTRIBUTE_SUPPORT.items():
        if (node in self._data):
            value = data[1].get(self._data[node], self._data[node])
            attr[data[0]] = value
    attr['id'] = self._hmdevice.ADDRESS
    attr['proxy'] = self._proxy
    return attr
