﻿Presence detectors detect heat motions and trigger a configurable circuit when motion is detected. In this way, a presence detector can increase security and energy efficiency in a building.

When selecting the "Presence detector" sensor type, you can choose between two sensor functions:

* with brightness sensor
* without brightness sensor

The ETS provides the corresponding parameters and communication objects dynamically for the function according to the parameterised function.
Most presence detectors have an integrated brightness sensor. This allows you to select whether brightness-dependent switching or brightness-independent switching should take place.

If the presence detector has a brightness sensor, the measured brightness value can be sent to the bus for further evaluation. You can choose to send the brightness value cyclically or when the brightness value changes. The corresponding threshold value or the cycle time can be configured.
