Fangrui Product Details Accurate Climate Monitoring: This Digital Indoor And Outdoor Thermometer Provides Accurate Temperature And Humidity Readings.the Large White Backlit Screen Displays Historical Data,trends And Comfort Indicators. Enhanced Visibility: Bold Black Numbers Ensure Easy Reading,and Its Versatile Design Allows For Both Desktop And Wall-mounted Setups,making It Accessible From Every Viewing Angle. Extensive Connectivity: Monitor Multiple Locations Using Three Wireless Sensors Connected To The Main Display,allowing Simultaneous Tracking Of Different Areas Up To 150 Meters Apart. For Comprehensive Monitoring Of Your Home,basement Or Greenhouse. Wide Measurement Range: Capable Of Measuring Indoor Temperatures From 14to 122and Outdoor Temperatures From -40to 140and Humidity Levels From To .the Device Ensures Precise Climate Control And Can Be Set For Damp,comfortable,and Dry Conditions. Wide Use And Alerts: Place This Remote Thermometer In Any Room-bedroom,baby Room,wine Cellar Or Office.it U