diff --git a/homeassistant/components/apcupsd.py b/homeassistant/components/apcupsd.py
index 8abb06b54eab708e0bb3a21cddd4ccbeeeb860d9..b7c22b3a7d9ca88fd950104b6ea6c7771889a596 100644
--- a/homeassistant/components/apcupsd.py
+++ b/homeassistant/components/apcupsd.py
@@ -3,13 +3,15 @@ homeassistant.components.apcupsd
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Sets up and provides access to the status output of APCUPSd via its Network
 Information Server (NIS).
+
+For more details about this component, please refer to the documentation at
+https://home-assistant.io/components/apcupsd/
 """
 import logging
 from datetime import timedelta
 
 from homeassistant.util import Throttle
 
-
 DOMAIN = "apcupsd"
 REQUIREMENTS = ("apcaccess==0.0.4",)
 
diff --git a/homeassistant/components/binary_sensor/apcupsd.py b/homeassistant/components/binary_sensor/apcupsd.py
index 8524b06e4babfa51294644193524d539ff42004c..796a2a0df704ebc5a78393a8f47da3ebe80a52f9 100644
--- a/homeassistant/components/binary_sensor/apcupsd.py
+++ b/homeassistant/components/binary_sensor/apcupsd.py
@@ -2,13 +2,14 @@
 homeassistant.components.binary_sensor.apcupsd
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Provides a binary sensor to track online status of a UPS.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/binary_sensor.apcupsd/
 """
 from homeassistant.components.binary_sensor import BinarySensorDevice
 from homeassistant.components import apcupsd
 
-
 DEPENDENCIES = [apcupsd.DOMAIN]
-
 DEFAULT_NAME = "UPS Online Status"
 
 
diff --git a/homeassistant/components/sensor/apcupsd.py b/homeassistant/components/sensor/apcupsd.py
index d72dc4ae4b97d7267b5b980dc5e614216574b6fe..8a5662254380a4138d9324defd66c451801f8cf0 100644
--- a/homeassistant/components/sensor/apcupsd.py
+++ b/homeassistant/components/sensor/apcupsd.py
@@ -1,7 +1,10 @@
 """
 homeassistant.components.sensor.apcupsd
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Provides a sensor to track various status aspects of a UPS.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/sensor.apcupsd/
 """
 import logging
 
@@ -9,11 +12,8 @@ from homeassistant.const import TEMP_CELCIUS
 from homeassistant.helpers.entity import Entity
 from homeassistant.components import apcupsd
 
-
 DEPENDENCIES = [apcupsd.DOMAIN]
-
 DEFAULT_NAME = "UPS Status"
-
 SPECIFIC_UNITS = {
     "ITEMP": TEMP_CELCIUS
 }
@@ -69,14 +69,17 @@ class Sensor(Entity):
 
     @property
     def name(self):
+        """ The name of the UPS sensor. """
         return self._config.get("name", DEFAULT_NAME)
 
     @property
     def state(self):
+        """ True if the UPS is online, else False. """
         return self._state
 
     @property
     def unit_of_measurement(self):
+        """ Unit of measurement of this entity, if any. """
         if self._unit is None:
             return self._inferred_unit
         return self._unit