The AcuRite Digital Thermometer features precise, reliable temperature readings using a weatherproof and water-resistant sensor probe. The thermometer provides both the temperature where the monitor sits and the probe's temperature.The bold, easy to read LCD screen displays the monitor's temperature or the probe's temperature with minimum / maximum temperature information. The external sensor probe is 10 ft. long for easy positioning outside a window, door or other areas. Display stands upright for tabletop use or is wall-mountable.