High Definition LCD Screen: This refrigerator thermometer is equipped with a 4.5-inch high-definition LCD screen, and the color screen can clearly display the temperature of two transmitters and the room. The measuring distance of the thermometer and transmitter is within 100 meters, which can receive well, making it a must-have for homes, restaurants, and wine cellars.

Customizable Alarm Function: This wireless fridge thermometer is an important tool for keeping food fresh. Freezer thermometer is equipped with two alarm modes: upper and lower limits. When the temperature exceeds or falls below the set range, it will trigger a flashing icon and sound alarm, ensuring that you can keep up with the situation in a timely manner. To avoid excessive temperature caused by temporary food retrieval, a beep will only sound after the temperature exceeds the set range for 1 minute.

MAX/MIN Temperature Recording: The wireless freezing thermometer records the maximum/minimum temperature fluctuations for 24 hours or all times, and can observe temperature changes at any time.

Battery & USB Powered: This unique digital refrigerator thermometer features backlight function, making it easy to check temperature in low light environments. When powered by batteries (not including batteries), the screen will light up in color and turn off after 10 seconds when the backlight button is touched; When using a USB power supply, there are 2 levels (high-low) of adjustable backlight brightness, and you can choose the appropriate brightness.

Pre Calibrated Sensor: This thermometer measures accurately, with a temperature measurement range of -40 ℃~60 ℃ (-40 ℉~140 ℉) for two transmitters, and a temperature accuracy of ± 1 ℃ (± 1.8 ℉); The temperature detection cycle of the transmitter is about 60 seconds. When it is placed in a low-temperature environment of the refrigerator from room temperature, it takes a relatively long time to adapt. When the trend arrow is flat, it indicates that the temperature is almost stable.