Thermostat with regulation for controlling an electrical water heating element for a storage water heater, the storage water heater comprising a flange, the flange configured to be constrained to a tank, the tank configured to be constrained to a casing, the casing constrained to a cap, the cap being coupled with a selector of a target temperature for water in the storage water heater, the thermostat with regulation configured to be constrainable to the flange supporting the electrical water heating element, the thermostat with regulation comprising: - an actuation block in turn comprising at least connections to a temperature sensor and at least an actuator for the heating element, - the selector, - a microcontroller adapted to: - receive an input from the selector of the target temperature for water in the storage water heater, by means of an electromechanical transducer, the electromechanical transducer being one of an encoder, a potentiometer or a trimmer, - receive a signal from the at least one temperature sensor, - control the at least one actuator, and comprising integrated in a single device: - the connections to the at least one temperature sensor; - a thermostat board, in turn comprising: - electronic means for the control of the temperature for water in the storage water heater; - at least one electrical connector (102.b) for the power supply of said heating element; - fastening means (102.b) to the flange, - the electromechanical transducer, characterised in that the thermostat with regulation further comprises: a kinematic chain connecting the selector to the electromechanical transducer, the kinematic chain starting from the selector, configured to engage a dragged element (60; 61) continuing with the dragged element (60; 61) which is couplable with said electromechanical transducer with which the kinematic chain ends wherein the kinematic chain comprises a slack and disengageable coupling comprising a clearance between the selector and the dragged element (60; 61). - an actuation block in turn comprising at least connections to a temperature sensor and at least an actuator for the heating element, - the selector, - a microcontroller adapted to: - receive an input from the selector of the target temperature for water in the storage water heater, by means of an electromechanical transducer, the electromechanical transducer being one of an encoder, a potentiometer or a trimmer, - receive a signal from the at least one temperature sensor, - control the at least one actuator, - receive an input from the selector of the target temperature for water in the storage water heater, by means of an electromechanical transducer, the electromechanical transducer being one of an encoder, a potentiometer or a trimmer, - receive a signal from the at least one temperature sensor, - control the at least one actuator, and comprising integrated in a single device: - the connections to the at least one temperature sensor; - a thermostat board, in turn comprising: - electronic means for the control of the temperature for water in the storage water heater; - at least one electrical connector (102.b) for the power supply of said heating element; - fastening means (102.b) to the flange, - the electromechanical transducer, - the connections to the at least one temperature sensor; - a thermostat board, in turn comprising: - electronic means for the control of the temperature for water in the storage water heater; - at least one electrical connector (102.b) for the power supply of said heating element; - fastening means (102.b) to the flange, - electronic means for the control of the temperature for water in the storage water heater; - at least one electrical connector (102.b) for the power supply of said heating element; - fastening means (102.b) to the flange, - the electromechanical transducer, characterised in that the thermostat with regulation further comprises: a kinematic chain connecting the selector to the electromechanical transducer, the kinematic chain starting from the selector, configured to engage a dragged element (60; 61) continuing with the dragged element (60; 61) which is couplable with said electromechanical transducer with which the kinematic chain ends wherein the kinematic chain comprises a slack and disengageable coupling comprising a clearance between the selector and the dragged element (60; 61). starting from the selector, configured to engage a dragged element (60; 61) continuing with the dragged element (60; 61) which is couplable with said electromechanical transducer with which the kinematic chain ends wherein the kinematic chain comprises a slack and disengageable coupling comprising a clearance between the selector and the dragged element (60; 61).