With the Z21-digital central control your system comfortably on your smartphone or tablet PC. The Multi Protocol Center is the ideal control system for locomotives with DCC or Motorola decoder (mm), as well as to control your digital components. The central connects your system and your digital locomotives to WLAN with your smartphone or tablet PC and the installed control apps, either one of the digital driver's cabs or the Z21-mobile app.With the model-specific driver's cab apps you can easily control by tapping the prototypical arranged control elements: your finger pushes the virtual acceleration lever forward, the LOC on driving. Tap the horn sounds the characteristic locomotive sound. As conveniently, you can, of course, also the headlights, the interior lighting and all other digital functions of the locomotive control.This text is machine translated.