Presence detector for presence monitoring (operating mode: presence detector), for motion detection (operating mode: ceiling monitor) or for monitoring indoors by means of message telegrams (operating mode: detector). Flush-mounted unit with integrated KNX bus connection. Programming LED/key visible/operable after removing the decorative ring when installed. PIR sensors: three sensors (crossed beam paths), integrated brightness sensor. Adjuster for manual sensitivity correction. Sensitivity configurable. Sensitivity adjuster on the device can be deactivated via software. Motion detection display (permanent or walking test only). Separate evaluation in the long range of the three PIR sensors, each with 120° detection field with overlap. Manual operation by IR remote control. Up to 5+2 function blocks configurable. Function blocks 1 to 5 each adjustable function: ceiling monitor, presence detector, alarm mode. Function block 6: presence detector with light control. function block