1. ℃/℉ units conversion: ℃ and ℉ display can be changed to meet daily needs. 3. A variety of display methods: hanging hole design, stand design, magnetic design. 2. Alarm function: when the temperature exceeds the set temperature value, the buzzer will emit an alarm sound. 4. The size and temperature values are displayed on the same screen for more intuitive observation of the data. 5. Wide range of applications: suitable for household refrigerators, supermarket freezers.