Translated Description from PIKO: Novelty 2020 sound test: The new PIKO Generation 4.1 SmartDecoders are state-of-the-art and promise even more versatile options for digital control of model railroad vehicles, as well as problem-free registration at suitable control centers via RailComPlus, such as our PIKO SmartControl control center , or on mfx-capable control devices, new individual settings in mapping and sound experiences at the highest level are now possible thanks to an increased output power of 2.5 watts. Replaces the sound decoder # 46194