Feature:1. ACCURATE READINGS: This wireless indoor outdoor thermometer features a large LCD display that measures real time temperature and humidity, displaying maximum minimum records and trend arrows over the past 24 hours.2. WIDE MEASUREMENT RANGE: The indoor temperature range is from 14 to 122 (10 to 50), and the outdoor temperature range is from 40 to 158 (40 to 70 ), with an accuracy of 1 . The indoor outdoor humidity range is from 20% to 95%, with an accuracy of 1%.3. VERSATILE DISPLAY: The monitor comes with a magnetic back and a stand, allowing you to place it on your desktop or attach it to your refrigerator as a decorative piece.4. 1 WIRELESS SENSOR: With a maximum range of 328 feet/100 meters (wireless frequency 433MHz), you can confidently monitor your entire home.5. MONITOR YOUR HOME WITH CONFIDENCE: Keep track of the temperature and humidity levels in your entire home, basement, or greenhouse with this reliable electronic indoor outdoor thermometer.Specification:Item Type: Wireless Digital Hygrometer Thermometer Material: ABSBattery Type: AAA battery x 4 (2 for sensors, 2 for monitors)(Shipped without batteries)Indoor Temperature Range: 14 to 122 (-10 to 50 )Outdoor Temperature Range: -40 to 158 (-40 to 70 )Temperature Resolution: 0.1/Humidity Range: 20% to 95%Humidity Resolution: 1%Wireless Range: 328ft/ 100m depending on vacant spaceWireless Frequency: 433MHzBacklit: Automatic off in 10 seconds.Package List:1 x Sensor 1 x Display 1 x Manual