Hello. Based on this lesson, I have water level control in the drinking water tank ( Automation 2.0 lesson 20. Plugin for the Aqara leak sensor, water control in the pool (tank) ).
The cellar temperature control is built into the combination of the Aqara T1 thermometer + socket + heater. The automation provides priority heating at night (three-zone electricity tariff), at other times only critical heating is used.