diff --git a/homeassistant/components/plum_lightpad/light.py b/homeassistant/components/plum_lightpad/light.py
index 737c6f2bfad..2fea14474bb 100644
--- a/homeassistant/components/plum_lightpad/light.py
+++ b/homeassistant/components/plum_lightpad/light.py
@@ -54,6 +54,11 @@ class PlumLight(LightEntity):
         """No polling needed."""
         return False
 
+    @property
+    def unique_id(self):
+        """Combine logical load ID with .light to guarantee it is unique."""
+        return f"{self._load.llid}.light"
+
     @property
     def name(self):
         """Return the name of the switch if any."""
@@ -130,6 +135,11 @@ class GlowRing(LightEntity):
         """No polling needed."""
         return False
 
+    @property
+    def unique_id(self):
+        """Combine LightPad ID with .glow to guarantee it is unique."""
+        return f"{self._lightpad.lpid}.glow"
+
     @property
     def name(self):
         """Return the name of the switch if any."""