Temperature controller, temperature control switch, thermostat knob, adjustable thermostat for AC 250V 16A, range 50–300°C Features a normally closed and a normally open contact configuration Specifications: Material: Metal, plastic, ceramic Rod diameter: 5mm Rod length: 50mm Cable length: 70cm Voltage rating: AC 250V Current rating: 16A Temperature range: 50°C to 300°C Electrical life: >100,000 cycles Dielectric strength: AC 2000V for 1 minute Insulation resistance: 100MΩ minimum Contact resistance: 50mΩ maximum Humidity insulation resistance: 10MΩ minimum Temperature response rate: 1.0°C per minute Minimum load current: 200mA Operating principle: As the temperature of the controlled object changes, the working fluid inside the thermostat expands or contracts due to thermal effects. This volume change actuates a bellows mechanism connected to a mechanical linkage. The movement is transferred through a lever system to open or close the electrical contacts, thereby maintaining a constant temperature. Suitable applications: Household appliances such as water heaters, drum washing machines, and space heaters Electric equipment including stainless steel automatic water boilers, electric frying pans, food processing machinery, and medical devices Refrigeration systems such as kitchen freezers, fresh food cabinets, refrigerators, ice machines, fish pond chillers, cold drink dispensers, and heating units requiring temperature regulation Package includes: 1 x Mechanical thermostat unit