Wireless Sensors for Different Locations - With built-in bracket and 2 remote sensors, you can place sensors in the refrigerator or outdoors. Wireless refrigerator thermometer can simultaneously display indoor temperature and 2 groups of refrigerator/freezer or outdoor temperature, which means the screen displays 3 temperatures at the same time. Sound alarm function - Equipped with a sound alarm, when the temperature exceeds the preset minimum and maximum alarm value, the thermometer will alarm to remind you and your family to know the temperature variations and make any changes in time. 3.6 inch HD large screen & record min and max - indoor outdoor thermometer with HD LCD screen. Large data volume for convenient viewing day and night. Record and display max/min temperature. Indoor: -10-60°C; Outdoor: -40-60°C; Transmission range: 30M / 98.4ft (open area). Press the \"℃/℉\" button to switch to Fahrenheit or Celsius Battery-operated & intimate service - The main unit requires 2*AAA (not included), 9.5*8*2cm; Each sensor 2*AAA (not included), 10.5*3.5*1.5cm. Easy installation and easy use - You can place the sensor in the refrigerator or outdoors. On the main unit, there is a hanging hole and a stand on the back, you can hang it on the wall or put it on the table.