diff --git a/source/components/sensor.arest.markdown b/source/components/sensor.arest.markdown
index b39d493602d..3d7f63d48e7 100644
--- a/source/components/sensor.arest.markdown
+++ b/source/components/sensor.arest.markdown
@@ -26,6 +26,16 @@ sensor:
       unit: '%'
 ```
 
+Configuration variables:
+
+- **resource** (*Required*): IP address and schema of the device that is exposing an aREST API, e.g. http://192.168.1.10.
+
+- **monitored_variables** array:
+
+  - **name** (*Required*): The name of the variable you wish to monitor.
+  - **unit** (*Optional*): Defines the units of measurement of the sensor, if any.
+
+
 The variables in the `monitored_variables` array must be available in the response of the device. As a starting point you find below a sketch for the Arduino device family. 
 
 ```c