diff --git a/custom_components/solaredge_modbus_multi/binary_sensor.py b/custom_components/solaredge_modbus_multi/binary_sensor.py
index 26869115..ecfa051d 100644
--- a/custom_components/solaredge_modbus_multi/binary_sensor.py
+++ b/custom_components/solaredge_modbus_multi/binary_sensor.py
@@ -34,6 +34,8 @@ async def async_setup_entry(
 
 
 class SolarEdgeBinarySensorBase(CoordinatorEntity, BinarySensorEntity):
+    """Base class for SolarEdge binary sensor entities."""
+
     should_poll = False
     _attr_has_entity_name = True
 
@@ -66,11 +68,9 @@ def _handle_coordinator_update(self) -> None:
 
 
 class AdvPowerControlEnabled(SolarEdgeBinarySensorBase):
-    entity_category = EntityCategory.DIAGNOSTIC
+    """Grid Control boolean status. This is "AdvancedPwrControlEn" in specs."""
 
-    def __init__(self, platform, config_entry, coordinator):
-        super().__init__(platform, config_entry, coordinator)
-        """Initialize the sensor."""
+    entity_category = EntityCategory.DIAGNOSTIC
 
     @property
     def available(self) -> bool:
diff --git a/custom_components/solaredge_modbus_multi/button.py b/custom_components/solaredge_modbus_multi/button.py
index bd299c7d..0d4dbffe 100644
--- a/custom_components/solaredge_modbus_multi/button.py
+++ b/custom_components/solaredge_modbus_multi/button.py
@@ -33,6 +33,8 @@ async def async_setup_entry(
 
 
 class SolarEdgeButtonBase(CoordinatorEntity, ButtonEntity):
+    """Base class for SolarEdge button entities."""
+
     _attr_has_entity_name = True
 
     def __init__(self, platform, config_entry, coordinator):
@@ -64,11 +66,9 @@ def _handle_coordinator_update(self) -> None:
 
 
 class SolarEdgeRefreshButton(SolarEdgeButtonBase):
-    entity_category = EntityCategory.CONFIG
+    """Button to request an immediate device data update."""
 
-    def __init__(self, platform, config_entry, coordinator):
-        super().__init__(platform, config_entry, coordinator)
-        """Initialize the sensor."""
+    entity_category = EntityCategory.CONFIG
 
     @property
     def unique_id(self) -> str: