My Delock Power Switch Plug doesn´t turn off in the automation

Share your Projects!
1

I have written the following automation code:

- id: '1550848650502'
  alias: Neue Automatisierung
  trigger:
  - at: '17:10:00'
    platform: time
  action:
  - service: switch.turn_off
    entity_id: switch.g_r_unknown_type_0003_id_0002_switch

What is the reason my Delock Power Switch does not turn off? When I turn it off per hand on the dashboard it works fine. In the Log-book I can see that my trigger works.