2in1 Wireless Electronic Thermometer High Accuracy Refrigerator Freezer Monitor Temperature Sensor Alarm -40℃~60℃

2in1 Wireless Electronic Thermometer High Accuracy Refrigerator Freezer Temperature Monitor Temperature Sensor Alarm -40℃~60℃ Features: 1.Wireless signal transmission distance without interference 100 meters, can display two different maximum and minimum temperature records at the same time. 2.℃/˚F unit conversion: Celsius and Fahrenheit display can be switched to meet daily needs and has strong signal penetration. 3.ALARM SETTINGS: When the indoor or outdoor temperature exceeds the preset minimum and maximum alarm values, the thermometer will emit an audible alarm and a visual alarm to alert you and allow you to see if adjustments are needed. 4.EASY TO INSTALL AND OPERATE: Use the magnet on the back to magnetically attach the thermometer directly to your refrigerator or freezer, or place it on a table. 5.APPLICATION: Can be used in the refrigerator, freezer or indoors and outdoors to easily monitor temperature changes and provide double protection for your food. Parameter: Measuring range (transmitter) : -40℃~60℃ ( -40℉~ 140℉) Tolerance : ±1℃ ( ±2℉ ) Temperature Resolution : 0.1 Wireless Frequency : 447.6MHZ Wireless range : 100 meters without obstacles Main unit size: 95x62x20mm Transmitter size: 95x36x20mm Use of power: (default delivery without batteries) Host: 2pcs 7 batteries (AAA) Transmitter: 2 pcs of 5 good batteries (AA) Package List: Thermometer*1 Transmitter*2