The AcuRite Digital Indoor Outdoor Thermometer delivers precise, reliable multi-zone temperature information. An easy-to-read LCD screen shows the current temperature for multiple locations. One temperature reading is taken by a built-in sensor inside the digital weather thermometer display. Additional reading is taken by a wireless thermometer sensor you can place either outdoors or in another room. Features include daily high and low records and a 12-hour clock. The sleek, stylish display stands upright for tabletop use and is wall-mountable.For a multi-zone wireless weather thermometer solution, you can connect up to two additional wireless sensors (sold separately), to monitor a total of four locations (including the display's built-in thermometer). When used with multiple wireless sensors, if desired, the display can be set to auto-cycle through each sensor's readings.The digital weather thermometer sensor features powerful wireless technology, a weather-resistant design and an integrated hanger for easy mounting.