The wireless refrigerator thermometer is equipped with a thermometer and 2 remote sensors, which can simultaneously display indoor temperature and 2 sets of refrigerator/freezer or outdoor temperature. Including 24-hour records of the lowest and highest temperatures, you can easily monitor temperature changes in your refrigerator, providing dual protection for your food safety.The freezer thermometer can record the highest/lowest temperature and display it up, down, and parallel to indicate the current temperature trend. Press the "/" key to switch between Fahrenheit or Celsius degrees.The wireless refrigerator thermometer is equipped with an audible alarm. When the temperature exceeds your preset minimum and maximum alarm values, the thermometer will sound an alarm to remind you and your family to understand the temperature changes and make timely changes.You can use its integrated magnet to connect the host to the refrigerator door, or hang it up with its hanging hole, or stand on the table with the bracket at the back.Two transmitters, with clamps and suspension holes at the rear for easy clamping or hanging on a rack. Equipped with an easy to read LCD display screen that shows the current indoor and outdoor temperatures.Indoor temperature range: 0C -+60C.Outdoor temperature range: -40 to+60 .Accurate temperature:+/- oneTransmission range: 100M/328 feet (open area)Digital thermometer power supply: 2xAAA batteries (not included).Sensor power supply: 2xAA batteries (not included)Note: The demonstration of other accessories in the picture is not included.Color: WhiteMaterial: Plastic