Alexa: Which devices can I control with Alexa via the Premium gateway? What are good commands for Alexa?

Basically, all receivers and roller shutter motors with the "smart" suffix that are registered with the Premium gateway can be controlled with the appropriate commands.
Just try out the commands. In addition to the commands mentioned here, Alexa is always "learning".

• Smart roller shutter motor premium
  Alexa, open or close <device name>.
  Alexa, set <device name> to 70%.
  
  
• Belt winder RolloTron smart
  Alexa, open or close <device name>.
  Alexa, set <device name> to 70%.
  
  
• Smart plug
  Alexa, turn <device name> on or off
  
  
• Zigbee lamps and addZ LED Smart bulb registered to the Premium gateway
  Alexa, set <device name> to 70%,
  Alexa, turn <device name> on or off,
  Alexa, <device name> brighter or darker.
  Alexa, <device name> blue, green, .....
  
  
• Smart radiator valve
  Alexa, set <device name> to 21 degrees>.
  Alexa, <device name> warmer or colder
  
  
• Smart garage door opener premium
  Alexa, open or close <device name>.
  Alexa, set <device name> to 70%.

Control of groups:

In the Alexa App, several devices can be combined into a group and then controlled together. All the commands mentioned above can also be used for the entire group. The exception to this are groups for roller shutters. Roller shutter groups can only be controlled with the open and close commands. Moving to per cent positions is not available for groups.