Sunvic simmerstats are used on electric boilers for controlling the temperature. They are 13A rated at 240vac and have a 4.7mm shaft. Available with or without a control knob.
Will replace all the other models such as TYJ6203, TYJ6202, TYJ0B1, TYJ6203, TYJ01A, TYJ6219, TYJ02B, TYJ6333. The alternative that can also be used is the EGO brand click here.