diff --git a/source/_components/sensor.markdown b/source/_components/sensor.markdown
index a3cc2019987..791be58a734 100644
--- a/source/_components/sensor.markdown
+++ b/source/_components/sensor.markdown
@@ -23,6 +23,7 @@ The way these sensors are displayed in the frontend can be modified in the [cust
 - **illuminance**: The current light level in lx or lm.
 - **temperature**: Temperature in °C or °F.
 - **pressure**: Pressure in hPa or mbar.
+- **timestamp**: Datetime object or timestamp string.
 
 <p class='img'>
 <img src='/images/screenshots/sensor_device_classes_icons.png' />
diff --git a/source/_components/sensor.rest.markdown b/source/_components/sensor.rest.markdown
index bae594e5f4a..4f9bb9ee299 100644
--- a/source/_components/sensor.rest.markdown
+++ b/source/_components/sensor.rest.markdown
@@ -52,6 +52,12 @@ name:
   required: false
   type: string
   default: REST Sensor
+device_class:
+  description: >
+    The [type/class](/components/sensor/) of
+    the sensor to set the icon in the frontend.
+  required: false
+  type: string
 value_template:
   description: "Defines a [template](/docs/configuration/templating/#processing-incoming-data) to extract the value."
   required: false