5k. In order to adjust the different temperatures in different seasons, Midea refrigerator door 4 is equipped with 5k refrigerator thermostat, which should be adjusted between 4-5k in summer and between 1-2k in winter. The larger the number, the lower the temperature in the refrigerator. Midea's refrigerator products include door-to-door series, multi-door series, Italian series, three-door computer series, three-door mechanical series, two-door computer series, two-door mechanical series, small refrigerators, commercial freezers, household freezers, wine cabinets, etc., which fully meet the differentiated needs of customers.