Trust Simple Home to bring you the best products for protecting your home. 
WiFi Door and Window Sensor:
Magnetic sensor alerts you when a window or door is opened
Get notified when door or window is opened with push notifications
Can create actions with other Simple Home products to turn on when magnets get separated
Base plugs into any standard wall plug and communicates with sensors up to 10' away
Installs in seconds: stick sensors onto surface with double sided tape (included)
Sensor’s battery lasts up to 1 year depending on usage
All of your products controlled by the Simple Home App