Freezers with rotary knobs

Rotary knobs

— controlled by rotary knobs. Theoretically, such knobs can be associated with any type of control, including complex electronic circuits. However, often this option implies the simplest mechanical method: the knob is directly connected to the thermostat sensor and is only responsible for setting the temperature. The possibilities of such controls are very limited, and the accuracy is low, so it is mainly used in low-cost freezers.