diff --git a/source/_integrations/sensor.markdown b/source/_integrations/sensor.markdown
index 9044b000593..e726d0c939d 100644
--- a/source/_integrations/sensor.markdown
+++ b/source/_integrations/sensor.markdown
@@ -24,6 +24,7 @@ The type of data a sensor returns impacts how it is displayed in the frontend. T
 - **current**: Current in A.
 - **date**: Date string (ISO 8601).
 - **energy**: Energy in Wh or kWh.
+- **frequency**: Frequency in Hz, kHz, MHz or GHz.
 - **gas**: Gasvolume in m³ or ft³.
 - **humidity**: Percentage of humidity in the air.
 - **illuminance**: The current light level in lx or lm.