Water level and temp, controller

The utility model is a water level and temperature control device, which is characterized in that the temperature control system adopts a differential amplifier circuit and a composite pipe circuit; the water level control system adopts a 555 time base circuit and a water level sensor component. The utility model solves the problems of low sensitivity in the water level and temperature control device and unreliable operation. The utility model not only can be used as a temperature and water level controller for household water heaters, but also in other aspects can be separately used for water level control or heating temperature control thanks to its control sensitivity, stability and reliability.