Fangrui Product Details Product Features:[ Magnetic ] It Can Be Pasted On Metal-containing Places Such As Refrigerators And Metal Doors, And Can Be Pasted And Removed At Any Time. [ Button Settings ]it Can Be Opened Or Closed For A Long Time; In A Short Time, It Can Be Adjusted [easy To Read And Use]digital Hygrometer Thermometer Work Right Out Of The Box Without Complicated Function Buttons. The Beautiful White Front Panel Has A Clear Lcd Displaying Large Bold Numbers That You Can Easily Read Even At A Distance. The Digital Hygrometer Thermometer Can Be Placed Anywhere In The Home Or Carried Outdoors, Powered By A Cr2032 Battery (included), Which Will Ensure You Have A More Powerful Battery Life And A More Worry-free Experience. [air Comfort Indicator]mini Thermometer Hygrometer With Practical Comfort Level Indicator, Vivid Visual Emoji Helps You Understand Humidity Immediately, Assisting The Usage Of Humidifier, Dehumidifier Settings, And Humidistat, And Also Facilitate Monitoring Familys Living Conditions By A Guard Aga