【2 Wireless Sensors for Different Places】- With built-in console and 2 remote sensors, you can place sensor in refrigerator or outdoor. Wireless refrigerator thermometer can simultaneously display indoor temperature and 2 groups of refrigerator/freezer or outdoor temperature, that means the screen will display 3 temperatures at the same time. 【Audio Alarm Function】- Equipped with an audio alarm, when the temperature exceeds the preset minimum and maximum alarm value, the thermometer will emit an audio alarm to remind you and your family to know the temperature changes and make certain changes in time. 【3.6Inch HD Large Screen Record Min and Max】- Indoor outdoor thermometer with HD LCD screen. Large data for comfortable viewing day and night. Record and display the max/min temperature. Indoor: -10-60°C; Outdoor: -40-60°C; Transmission Range: 30M / 98.4ft (open area). Press ℃ / ℉ key to switch between Fahrenheit and Celsius Thermometer: Power Supply: 2 x AAA batteries (not included)