What is the name of the instrument capable of displaying the water temperature and volume of a domes

This is called a solar meter, and the usage table is different. The three main functions are water supply, antifreeze and electric heating. Just press the button corresponding to the corresponding word. The water supply has an automatic water filling function, that is, the meter will automatically fill water when there is no water and automatically stop when water will be full. There are automatic and non-automatic antifreeze functions. Electric heating is generally done by hand. Some good ones have automatic electric heating.