Hygrometer and Thermometer-Monitor indoor and outdoor temperature (Fahrenheit or Celsius) and humidity through daily high and low records. The wireless all-weather outdoor remote control can accurately measure temperature and humidity conditions. Accurate and easy to read-4 inches large screen, easy to read and set up. Temperature accuracy: -16.9C or 1C humidity accuracy: 5 percent . 200 feet or 60 meters long-range distance-200 feet or 60 meters, with strong signal penetration humidity monitor. Note: Do not place the sensor near wireless communications (such as TVs, microwave ovens, computers, etc.). Backlight and touch screen- wireless thermometer and hygrometer have blue backlight and touch screen, turn on the backlight to make it clear and easy to read at night, and automatically turn off in 10 seconds. Multiple installation methods-This digital hygrometer thermometer has a desktop stand, which can be placed on the counter, or fixed on the refrigerator with a magnetic back or on the wall. Powered by 4 AAA batteries (batteries not included)