Accurate & MAX / MIN Record & Temperature Range - The value of precision to one decimal place, which is different from the integer of other products. Indoor temperature range: -10 ~ 60 (14 ~ 140 ), outdoor temperature range: -40 ~ 60 (-40 ~ 140 ). The transmission range is 100M / 328ft (open area). It can also record the MAX and MIN temperature and display the up, down and parallel arrows to show the current temperature trend. Audio Alarm Reminder - The wireless refrigerator temperature with audible alarm, you can set the maximum and minimum alarm value manually. It can ring when the temperature value reaches the limit value of max or min alarm value that you have preset. It is a useful helper for you and your family to know the temperature fluctuations and to make some changes in time. Dual Wireless Sensors for Different Locations - With built-in console and 2 remote sensors, the wireless refrigerator thermometer can display the indoor temperature and 2 groups of outdoor temperature at the same time. You can use it in the fridge, freezer or outdoors. It provides safe food storage and allows you to live healthy lives. Operate Easy - There are 6 function buttons on the weather station and a signal display on the transmitter. You simply press the appropriate button to turn the alarm on / off, switch Celsius or Fahrenheit and delete the MAX / MIN records. In addition, the compact and user-friendly design is perfect for mounting on all types of refrigerators or freezers. Installation - The wireless thermometer is easy to install. With integrated magnets, a hanging hole and a holder on the back, you can attach the main unit to your refrigerator door, hang it on the wall or stand on the table. With clamps and hanging holes on the back, easy to attach or hang on the shelf. If there is a problem with the product, please contact the seller immediately and we will resolve the problem for you shortly.