You can control the myStrom switches via IFTTT. So you only have to program a command once via IFTTT (e.g. "I am at home") and every time you enter the command via Alexa, the predefined switches are triggered. By the way, it also works with many other IoT devices, so you can have your Nuki lock open your front door when the GPS of your phone is closer than 1km to your home, the possibilities are relatively unlimited.