NO BASE STATION REQUIRED: Can be set up within minutes and can pair with other Swann sensors, sirens, cameras & more. Once the sensor is connected to Wi-Fi you can get push notifications whenever a window or door is opened no matter where you are COMPLETELY WIRELESS: Powered by 2 x AAA batteries (included). 2-sided adhesive tape allows for non permanent installation making it perfect for both property owners and renters EASY TO USE: If a door or window is opened, disrupting the magnetic connection between the Sensor & Receiver, you can activate/deactivate remotely using the app 1 YEAR LIMITED WARRANTY: Swann provides protection against factory defects and technical support; If you experience any challenges with our products, reach out to our customer service and we will replace the item ASAP within one year of purchase