outdoor.patch

diff --git a/home_assistant/custom_components/switch.py b/home_assistant/custom_components/switch.py
index 841b2a4..2f9d26f 100644
--- a/home_assistant/custom_components/switch.py
+++ b/home_assistant/custom_components/switch.py
@@ -51,7 +51,10 @@ class VeSyncSwitchHA(SwitchDevice):
     @property
     def unique_id(self):
         """Return the ID of this switch."""
-        return self.smartplug.cid
+        if hasattr(self.smartplug, 'sub_device_no'):
+            return self.smartplug.cid + str(self.smartplug.sub_device_no)
+        else:
+            return self.smartplug.cid
 
     @property
     def name(self):