Digital IN-Outdoor Thermometer Hygrometer Thermo-Humidity Meter with outdoor Probe Large LCD display temperature and humidity simultaneously IN and OUT temperature measuring. Desk-top placing or Wall Hanging. MIN and MAX value recording. Confortable degree symbol Selectable temperature unit: C or F The outdoor sensor comes on an about 8.85 ft long, thin wire. It can easily be routed through a window frame to measure outdoor conditions.