# Sensors
The Sensors tab is used to implement sensor activation polygons and hide sensors from certain profiles:
## Enabled Sensors
Sensors can be unchecked here, which will disable them in the profile. This is useful for systems which have both an aerial camera and a panoramic, mobile-mapping camera.
## Sensor Activation Polygon
**Sensor Activation Polygons** are used to automatically enable and disable sensors based on the vehicle position. Sensors will be enabled if the vehicle is within the polygon, and disabled when the vehicle is outside of the polygon. This is useful for preventing collection of unnecessary data.
Any polygon loaded into the project as a [Geometry](https://docs.phoenixlidar.com/spatialexplorer-8-and-9/user-interface/windows/project/geometry) can be used as a sensor activation polygon. Load a KML geometry using **File->Open**, then select to load the KML as a Geometry:
Ensure that the polygon correctly displays in the main view. Consider enabling a **Terrain** base map:
Next, in the **Sensors** tab of **Rover Settings**, load polygons from the geometry:
Once loaded, you will see a **SpatialRover** geometry in the project window:
The sensor activation polygon will appear as a feature in the **SpatialRover** geometry. You can view features of a geometry by clicking the **Properties** button:
With the sensor activation polygon loaded, the system will now automatically control the Sensors window, setting sensors to ACT when inside the polygon, and to OFF when outside of the polygon:
{% hint style="warning" %}
Sensor activation polygons will remain on the system until cleared by the user. Sensor activation polygons stored on the system apply to all [rover profiles](https://docs.phoenixlidar.com/spatialexplorer-8-and-9/user-interface/toolbars/rover/rover-settings-and-profiles/..#profiles) on the system.
{% endhint %}
To clear any sensor activation polygons on the system, click the **Clear** button in the **Sensors** tab:
