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temperature range: -30 ° c to 60 ° c size: 6.7x2.5x4.3cm refrigerator thermometer battery: cr2032 (not include) when the screen prompts the battery is low, please pay attention to replace the battery. - if the temperature is lower than -30 ° c, it will display: "ll.l" - if the temperature is higher than 60 ° c, it will display: "hh.h" frost alarm: - temperature range: 4.0 ° c to 7.9 ° c, - when it runs within this pick, the snowflake icon will appear on the screen.