# Basic Camera Settings: MxActivitySensor

The MxActivitySensor is a camera-internal video motion detector that can identify direction of motion detection and object size while blocking out any undesired interference (such as trees swaying in the wind) when detecting motion. By default, a MOBOTIX camera ships with a predefined MxActivitySensor profile.
You can activate and deactivate this profile in this tab, change the name of the profile, adjust the event dead time, change the detection range and define new areas.

#### Active

The MxActivitySensor profile is also activated when the Arming feature is enabled in the general settings.

#### Profile name

You can change the preset profile name.

#### Event Dead Time

The event dead time defines a period of time (0–3600 sec.) after an event during which no new events from the same profile are detected. By defining an event dead time you can avoid, for example, that a complex action (person walks through the active image area) triggers multiple events. You can adjust the preset event dead time (5 sec.).

#### Edit detection area

Proceed as follows to adjust the default detection area or to define additional image areas:
Click on the green detection area in the live image preview.

Action | Explanation
--- | ---
Change shape of detection area | Position the mouse pointer on one of the white "handles" until the icon is displayed. Click and hold the left mouse button and drag the frame to make the detection area larger or smaller.
Move detection area | Left-click on the detection area and move it to the desired position.
Rotate detection area | Click on and, while holding the mouse button down, rotate the detection area clockwise or counterclockwise.
Change shape of detection area | Switch to polygon mode by clicking on . You will see white corner points on the corners. Drag the corner points to the desired position. You can insert new corner points by right-clicking on the white line or in the detection area. Right-click on a dot to delete a corner point. Then click on .
Deleting a Detection Window | Click on .
Create a detection window | Use the mouse to pull open a new window in an area that is not yet covered by another window.
Exclude area from analysis | Pull open a window of the appropriate size at the position that should be excluded from the analysis. Click in the window and keep the mouse button depressed until two icons appear. Click on to determine the exclusion window. The window turns red.