Thermometer. Displays indoor and outdoor temperatures in °C or °F. Stores the highest and lowest measured values. Can be placed on a table or mounted on a wall. The iROX Thermometer CT112C not only informs you about the indoor temperature but also the outdoor temperature using a sensor. Additionally, the device stores the highest and lowest measured values. The outdoor thermometer sensor can be placed through a window to determine the outdoor temperature. You can choose between Celsius and Fahrenheit. The thermometer can be set up on a table or mounted on a wall. Two AAA batteries are included in the package.