Hi, me and my family moved here to Germany from Ukraine. And every room in our apartment has an electric heater like this [https://www.ebay.de/itm/274567663760?var=0](https://www.ebay.de/itm/274567663760?var=0) . But I have no clue how it works there are two regulators one on the wall and another one on the heating system itself. I tried to play with it but it is not warm at all.