DescriptionThe wireless refrigerator thermometer includes 1 indoor temperature built-in the console and 1 remote sensor, which can monitor indoor and outdoor temperature. All time indoor and outdoor MAX & MIN temperature records in F or C. Temperature trend arrows indicate whether it's getting warmer or colder nearby remote sensor. When indoor or outdoor temperature exceed your pre-set minimum and maximum alarm value, the thermometer will make audio alarm to remind you, allowing you to be aware if adjustments are necessary for your household.Features- Color: White. - Material: ABS. - Size: About 9.8 x 8.5 x 2.2cm. - Temperature Range: Outdoor -40F to 140F (-40C to 60 C); Indoor 32F122F(0C to 50 C). - Transmission Range Up: wireless sensor without interference up to 100m. - Includes 1 indoor temperature built-in the console and 1 remote sensor, which can monitor fridge and indoor temperature. - Easy to read LCD screen displays the current indoor outdoor temperature. When insufficient electricity, there are will be shown on the LCD screen. - With a temperature trend indicator arrow and daily high and low information. - Display stands upright for tabletop use or is wall-mountable. - Includes 24 hours high and low records for temperature. - The display console displays temperature,minimum and maximum temperature, which can be reset manually. - Powered by 2 AAA batteries(Host) and 2 AA batteries(Remote sensor). - Note: The sensor is not waterproof, so please keep it away from rain.