: This is a wireless digital freezer therometer. It can be used in the freezer and act as therometer indoor and outdoor. Its own audible alarm can warn you of the exceeded temperature in time. Features : The minimum and maximum temperature are display on the LED screen and can be reset manually. With indoor and outdoor audible alarm. When temperature exceed your pre-set minimum and maximum alarm setting, it will make a sound alert. It can be used in the freezer and act as therometer indoor and outdoor. Includes 24 hours Min and Max temperature records and you can easily monitor the temperature change of your refrigerator and provide double protection to your food safety. With a temperature trend indicator arrow and daily high and low information. Comes with a adjustable hook so the dispay is wall-mountable or stands upright for tabletop use. Specification : Material: ABS Update Rate: 10 seconds Indoor Temperature range: 0 ~ 50 (32 ~ 122 ) Outdoor Temperature range: -40 ~ 60 (-40 ~ 140 ) Power Supply: 2 X AAA battery for the host, 4 X AA battery for the sensor (Not included) How to Install the Sensor : The sensors are equipped with a spring-loaded clips along with a Plastic grip to tightly attached to the edge of a shelf. The display is magnet-mountable on a fridge, or use the integrated keyhole for wall mounting. Notice : Do not install the reverse battery. Avoid transmitter directly in the rain. Payment Shipping Returns Contact Us [ Policy: And this area is the details contents of your policies. You can add a banner for this policy as header and add text s here. The text s can be different Font Size, Font Color, Style and even graphics and icons are also accepted. ] [ Shipping: This is the contents of your Shipping. You can add a banner for this Shipping as header and add text s here. The text s can be different Font Size, Font Color, Style and even graphics and icons are also accepted. ] [ Return: This is the contents of your Return. You can add a banner for this Return as header and add text s here. The text s can be different Font Size, Font Color, Style and even graphics and icons are also accepted. ] [ Contact Us: This is the contents of your Contact Us. You can add a banner for this Contact Us as header and add text s here. The text s can be different Font Size, Font Color, Style and even graphics and icons are also accepted. ]