2-way dimming actuator for KNX 2 x 300 W VA REG plus Features: Dimming actuator with integrated bus connection. Switching and dimming of incandescent lamps, HV halogen lamps, dimmable HV LED lamps, dimmable compact fluorescent lamps, dimmable inductive transformers with LV halogen or LV LED lamps, dimmable electronic transformers with LV halogen or LV LED lamps. Automatic or manual selection of the dimming principle that suits the load. Idle, short-circuit and overtemperature proof. Manual operation of the outputs independent of the bus (construction site operation also possible). Construction site operation: Outputs can be operated manually without bus voltage, only with the operating voltage. Functions: Independent control of the dimming channels. Central switching function for controlling all dimming channels. Delay for actively sending feedback after bus voltage returns. Specification of the load type and determination of the dimming principle possible: Universal (with automatic calibration process), electronic transformer NV-LED (capacitive phase control), conventional transformer NV-LED (inductive phase control), HV-LED (phase control) or HV-LED (phase control). Feedback 'switching' and 'brightness value'. Setting of the dimmable brightness range possible. Dimming behavior and dimming characteristics can be parameterized. Switch-on behavior with relative dimming command can be parameterized. Lamp-friendly switching on and off. Automatic setting and scaling of the dimmable brightness range when using universal power boosters. The behavior of a dimming channel in the 'OFF' state when receiving a relative dimming command can be parameterized (switch on and dim up or no reaction). Reporting telegrams for short circuits, overloads and load failures. Feedback of the connected load type. Locking function or forced position function can be parameterized for each output. Time functions (switch-on or switch-off delay, staircase lighting function). Staircase lighting function with advance warning function through time-controlled reduction of lighting or activation of permanent lighting. Linking function and up to eight scenes per dimming channel possible. Operating hours counter for recording the switch-on time. Reactions to bus voltage failure and return can be set. Notes: Power extension using Gira power boosters. Installation on DIN top hat rail. VDE approval in accordance with EN 60669-1, EN 60669-2-1.