Wireless Digital Freezer Alarm Thermometer Twozone monitoring in one display: Includes one main thermometer and a remote sensor. The unit can display indoor temperature and either the refrigerator/freezer or outdoor temperature at the same time for convenient, ataglance monitoring. 24hour min and max temperature records for food protection: Keeps track of the lowest and temperatures over the last 24 hours, helping you verify stability and respond quickly to fluctuations. temperature alarm with audible alert: When the temperature exceeds the preset minimum or maximum values, the device emits a sound alarm to warn you and prompt timely action. Easytoread LCD display with wide temperature ranges: Shows current indoor and outdoor temperatures clearly. Indoor range: 10C to 60C (14F to 140F). Outdoor range: 40C to 60C (40F to 140F). Flexible mounting options: Main unit can attach to a refrigerator door with an integrated magnet, be hung on a wall via the hanging hole, or placed on a table using the back bracket. Two transmitters are included with clips and hanging holes for easy shelf installation. Included accessories and setup: The system comes with one main thermometer and a remote sensor, plus two transmitters with mounting options for versatile placement in kitchen, garage, or storage areas. Practical use scenarios Kitchen or food storage: Place the main unit on the fridge door and use the remote sensor to monitor the freezer or another area to ensure food safety and detect temperature changes quickly. Garage or storage spaces: Use the outdoor/transmitter sensor to monitor ambient conditions or secondary storage areas, helping protect beverages, produce, and other temperaturesensitive items. Wine cellar, pantry, or cold storage: Keep track of temperature stability in a dedicated storage space and receive alerts if conditions drift, enabling timely adjustments.