Mini brightness controller for KNX Features: The brightness controller is mounted on the ceiling directly above the place to be illuminated, e.g. a workplace. Analyses the lighting conditions of the area below it. The brightness control can be activated and deactivated by a motion or presence detector or by a button. Extremely flat installation. Clamp mounting on suspended ceilings. Ceiling mounting on solid ceilings in a device box according to DIN 49073 using optional accessories. Surface mounting in a surface-mounted device box (optional accessory). Protection class IP44 enables installation outdoors or in damp rooms. The design ring can be painted over to match the colour of the wall or ceiling. After removing the design ring, the device's programming button can be easily reached from the front. Brightness sensor with limit value monitoring: Up to three limit values can be parameterised. The switching, dimming value transmitter, light scene extension and hysteresis functions can be configured. Limit value can be changed via communication object or teach-in. Coupled to the lighting system, the lighting is dimmed (constant light control) or switched (2-point control) depending on the daylight. Includes locking function.