diff --git a/kasa/smart/modules/powerprotection.py b/kasa/smart/modules/powerprotection.py
index 5e371b89..095bfbe1 100644
--- a/kasa/smart/modules/powerprotection.py
+++ b/kasa/smart/modules/powerprotection.py
@@ -96,3 +96,10 @@ class PowerProtection(SmartModule):
             "protection_power": threshold,
         }
         return await self.call("set_protection_power", params)
+
+    async def _check_supported(self) -> bool:
+        """Return True if module is supported.
+
+        This is needed, as strips like P304M report the status only for children.
+        """
+        return "power_protection_status" in self._device.sys_info
diff --git a/tests/smart/modules/test_powerprotection.py b/tests/smart/modules/test_powerprotection.py
index 8db89721..10e94ede 100644
--- a/tests/smart/modules/test_powerprotection.py
+++ b/tests/smart/modules/test_powerprotection.py
@@ -22,7 +22,7 @@ def _skip_on_unavailable(dev: SmartDevice):
 @pytest.mark.parametrize(
     ("feature", "prop_name", "type"),
     [
-        ("overloaded", "overloaded", bool | None),
+        ("overloaded", "overloaded", bool),
         ("power_protection_enabled", "enabled", bool),
         ("power_protection_threshold", "protection_threshold", int),
     ],