Fangrui Product Details Fangrui Product Details Comprehensive Protection - These Door And Window Alarms Sensors Provide A Comprehensive Protection Plan For Your Home Security, Office, Or Any Living Space. With The Ability To Use One For A Door And One For A Window, Or Both For , This Cost-effective Solution Keep You And Your Family Safe. Instant Alert - Help Secure And Of Your Home, Office, Or Apartment With The 120 Db Door/window Alarm Or Chime. Easy To Use And Deafening Alarm Alert You And Your Neighbors Of An Intruder, Or Deter Intruder. An Attention-grabbing Alarm Is Audible Hundreds Of Feet Away. Compact Magnetically Triggered Alarm Sounds When A Window Or Door Is Opened. Customizable Settings - Easy To Change From Off/chime/alarm Setting Alerts You When People/children Are And Going When Youre . No Worry About The Alarm Being Deafening, Quickly The Button To Adjust The Volume As You Need (from 85 Db To 120 Db). Easy Installation - The Simple, Wire-free Design Of The Alarms Is For Homes, Apartments, Dorm Rooms, And Offices Security. Each Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin