1. Wireless Digital Freezer Alarm Thermometer with 1 thermometer and remote sensor. The display shows indoor and outdoor temperatures simultaneously, and can also monitor a fridge/freezer area for added protection of stored food. 2. 24-hour min and max temperature records provide a clear history of temperature changes, helping you verify consistent storage conditions and respond quickly to fluctuations. 3. Easy-to-read LCD display. Indoor temperature range is -10°C to 60°C (14°F to 140°F) and outdoor temperature range is -40°C to 60°C (-40°F to 140°F), ensuring clear visibility in a variety lighting conditions. 4. Sound alarm for temperature changes. The unit includes a audible alert when the temperature exceeds preset minimum or maximum values, enabling timely adjustments to protect food quality. 5. Flexible mounting options. The main unit can mount on a refrigerator door using the integrated magnet, be hung on a wall via the hanging hole, or placed on a table with the back bracket. The remote sensor includes clips and hanging holes for attachment to a shelf or other surface. Use scenarios: - In a home kitchen, monitor the refrigerator and freezer temperatures to detect door left ajar or cooling equipment issues, helping prevent spoiled food. - In a garage, utility room, or shed, track an extra fridge, beverage cooler, or freezer to ensure stored items stay within safe temperature ranges. - In small offices or retail settings with display or storage refrigeration, maintain temperature accuracy and receive alerts to protect perishable inventory.