1 Wireless Sensor for Multiple Locations: With a built-in console and 1 remote sensor, you can place the sensors inside or outside the refrigerator. The wireless refrigerator thermometer can display the indoor temperature and 1 set of refrigerator/freezer or outdoor temperatures simultaneously, meaning the screen displays 3 temperatures at once. Audible Alarm Function: Equipped with an audible alarm. When the temperature exceeds the preset minimum and maximum alarm values, an alarm will sound to remind you and your family of the temperature changes and make certain adjustments in time. 3.6-inch HD Large Screen and Minimum and Maximum Recording: Indoor and outdoor thermometer with a high-resolution LCD screen. Large data volume, convenient viewing day and night. Maximum/minimum temperature recording and display. Indoor: -10-60°C; Outdoor: -40-60°C; Transmission range: 30m (open area). Press the "℃/℉" button to switch between Fahrenheit and Celsius. [Battery Operated and Intimate