SimpliSafe Entry Sensor - Window and Door Protection - Compatible with Gen 3 Home Security System

Entry sensor - Protect your doors, windows, cabinets and more., Compact design - Fits on almost any window, door or cabinet., Instant chime alerts - When a door or window is opened, the Base Station can sound a chime or tell you which sensor has been activated., Customizable alerts by sensor - Can set up Secret Alerts that won't sound the alarm but will send a discreet notification directly to your phone., Simple set up - Peel and stick installation or can permanently mount with included hardware., Long-lasting battery - pre-installed battery, Compatible with the SimpliSafe Gen 3 home security system