Wireless Fridge Thermometer, Digital Thermometer with 2 Sensors, Color Screen, Max/Min Values, Alarm, Freezer Temperature Sensor Powered by USB/Battery for Home

Dual Channel and Clarity: fridge/freezer thermometer is equipped with two independent wireless sensors that simultaneously monitor the temperature and humidity in the fridge and freezer. All data is clearly displayed on a bright 3.42-inch colour display with white backlight, ensuring excellent readability even in low-light environments. Alarm function: wireless refrigerator thermometer can set maximum and minimum temperature alarms for both sensors. When the temperature exceeds the set value, the device immediately triggers a continuous audible alarm accompanied by a flashing red backlight, ensuring effective protection of stored food. Multifunctional thermometer: colour screen refrigerator thermometer shows the history of maximum and minimum temperatures and humidity over 24 hours. It also has backlight and low battery alerts. The device is equipped with a bracket, a hanging hole and a magnetic back for positioning, wall mounting or fixing. The sensors also have a hanging hole for wall installation. Monitoring Function: refrigerator thermometer monitors indoor temperatures from -10°C to 60°C (-14.2°F to 140°F) and relative humidity from 10% to 99%, as well as outdoor temperatures from -40°C to 60°C (-40°F to 140°F). It can change ℃/℉ measurement unit to suit different preferences and provides stable wireless transmission with a range of up to 100m in open space. Power supply and backlight: digital thermometer can be powered by 2 AAA batteries (not included) or by USB cable, while each sensor works with 2 AAA batteries (not included). When powered by batteries, the backlight can be turned on for 8 seconds before turning off automatically to save energy. When powered by USB, the backlight stays on