Motion detector with ambient light measurement for the automatic control of loads based on movement and brightness. Can function as a switch at any time. Designed to detect down to the floor and in stairwells. Features four detection levels. In combination with the flex dimmer module, it offers a dimming function for lighting and optionally a light value storage. Includes an activatable pre-warning for switching off during stair operation. Compatible with all flexTronics modules. The adjustment elements are located on the back. The multi-lens design is also suitable for mounting heights of 2.20 m. The detection range can be extended by combining the main unit with an extension unit. Additional activation possible via the switch input on the flush-mounted unit. Includes a continuous light/continuous off function as well as a brightness-independent test mode for assessing the detection range, along with a detection indicator in test mode.