Easy to read: This digital thermometer design with a large number of clear LCD display, allows you to read the data quickly and accurately. You can switch from indoor room to fridge/freezer. Temperatures freely by pressing the "Room / Fridge" button. Wide measurement range: The temperature range of this thermometer is from -50℃ to 70 (-58℉~158) with an accuracy of +/-1. You can change the temperature unit to "℃/℉".button, very easy and convenient. Easy to install: There are 3 mounting options, such as magnet, keyhole or flip stand. You can choose one way to place them when you measure temperature. Perfect for measuring temperature in refrigerator, freezer, indoor room, etc. High Accuracy: The package comes with a long wire sensor and a solid-state probe. The probe is very sensitive and therefore allows precise measurement. Powered by 1 AAA battery (not included) with lower power consumption. Temperature recording: it has a maximum temperature memory / minimum and two alarm settings (high / low temperature alert). It is also equipped with an audible alarm system.