Adding an additional level to home security with the Connex Connect Smart WiFi wireless, Magnetic Door Window Sensor, rechargeable 500 mAh Lithium-Ion Battery. Instant Mobile notification of Sensor Activation via your Mobile App.No hub required, the Sensor connects to your 2.4 Ghz home WiFi network via your smartphone and the Connex Connect app, you can set Scenes, Schedules and Automations. Manage the Sensor via Google Home and Amazon Smart Home skills.Easy DIY installation with quick App installation from Google play or iOs Store and get notified Remotely from anywhere in the world.Specifications:- App: Connex Connect- Dimensions: 80 x 54 x 18 mm- Battery: 3.7V 500mA Li-ion- Technology: LED & WiFi- Connectivity: WiFi 802.11bgn 2.4GHz- Max. Current: 90mA- Stand-by Current: 20?A- 1 Year WarrantySystem Requirements:- Mobile Device running iOS 8 orhigher or Android 4.1x or higher- Connex Connect App- Existing 2.4GHz WiFiWhat's in the box1 x Connex Connect Smart WiFi Door Window Sensor Recharge