Accurate & MAX/MIN Recording & Temperature Range - The value is accurate to one decimal place, which is different from the whole number of other products. Indoor temperature range: -10~60 (14~140), outdoor temperature range: -40~60 (-40~140). The transmission distance is 100m/328ft (open area). In addition, it can record the MAX and MIN temperatures and display the up, down, and parallel arrows to indicate the current temperature trend.Audio Alarm Reminder - The wireless refrigerator temperature with an audible alarm; you can manually set the maximum and minimum alarm values. It can ring when the temperature reaches the max or min alarm value you have preset. It is a useful helper for you and your family to know the temperature fluctuations and make some adjustments in time. Dual Wireless Sensors for Different Locations - With a built-in console and two remote sensors, the wireless refrigerator thermometer can simultaneously display the indoor temperature and two groups of outdoor temperatures. You can use it in the refrigerator, freezer, or outdoors. It provides safe food storage and enables you to live a healthy life. Easily Operate - There are six function buttons on the weather station and a signal indicator on the transmitter. Simply press the corresponding button to turn the alarm on/off, switch Celsius or Fahrenheit, and clear the MAX/MIN records. Furthermore, the compact and user-friendly design is perfect for mounting on all types of refrigerators or freezers.