What is the purpose of the black ring (if it has any) on my radiator’s control?

12 comments
  1. Please lower your thermostat to max. 3; 2 if this thermostat is in your bedroom/kitchen. Thank you.

    On a more serious note: I don’t really understand which black ring you mean? The one with “Danfoss Thermostat” written on it?

  2. I think the ring is just a marker. You can turn it to remember what your default setting is if you temporarily put it higher or lower.

  3. Thanks for all the answers. I just moved in into the apt, so i will take it into consideration to clean the thing with a toothbrush and to set the right temp. Merci

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