1、Easy to Use: With its magnetic backrest, stand and hook suspension, this fridge thermometer is compact and lightweight, portable and easy to use. 2、Wide Application: This refrigerator thermometer is widely used in household refrigerators, restaurants, supermarkets, pharmacies and medicine cabinets. 3、Digital LCD Display: This refrigerator thermometer has a large digital LCD display with Celsius and Fahrenheit switches for easy reading. 4、Long Distance Measurement: This refrigerator thermometer has a long external sensor line for long distance measurement and is able to measure the internal and external temperature of your refrigerator or freezer. This feature allows you to monitor the temperature in real time and adjust it as required. 5、Alarm Function: This fridge thermometer has built in fridge and freezer alarms, this feature allows you to act quickly when the temperature drops to prevent food spoilage, making it an essential tool for food safety. Item Type: Refrigerator Thermometer Material: ABS Name: Thermometer Model: TM804 Power Supply: 1 x AAA1.5V(not included) Use: Temperature test Basic functions Range Accuracy Internal temperature -10℃-50℃ ±1℃ 14℉-122℉ ±1.8℉ External temperature -50℃-70℃ ±1℃ -58℉-158℉ ±1.8℉ Alarm Beep: Alarm every 60 seconds, 5 seconds beep Maximum Minimum value High and low temperature upper and lower limit setting alarms Celsius to Fahrenheit conversion Sampling Rate: 1 time / 10 seconds Long Distance Measurement: 3m external sensor wire length 1 x Refrigerator Thermometer 1 x Accessory 1 x Double Side Self Adhesive