This kit includes 2x EZVIZ Battery Cameras that are weatherproof indoor/outdoor standalone 100% wire-free, battery-powered security camera and the EZVIZ Hub which prolongs the battery life of an EZVIZ Battery Cam by up to 9 months and has a built-in Siren. (Work Condition: Normal temperature and environment, triggered 5min/Day). Furthermore, the hub has a built-in 100db Siren so that when motion is detected you can choose via the EZVIZ app if you want an automatic or manual siren activation to occur. A wide range of accessories are also available to enhance your EZVIZ wire-free Battery Camera experience, including a charging station, spare batteries, and metal mount for more secure installation. Rechargeable Battery for EZVIZ wire-free camera – Long Life 5500mAh Rechargeable lithium battery for the wire-free camera that can last up to 3 months on its own, but when used with EZVIZ base station, battery life can be prolonged up to 9 months. Smart Human Detection & Instant Alerts – Featuring PIR human detection, the Battery Cam sends an instant alert to you when a human is approaching. With two-way audio you can also communicate via the EZVIZ app. HD Video with Wide-Angle View & Night Vision – With its HD 1080p wide-angle lens, the wire-free camera gives you a convenient 126 degrees’ view. The wire-free camera also features up to 5 meters of night vision and delivers crystal clear images even at night. One App Does All the Work – All you need to do for setup is follow the instructions via the free EZVIZ app and your home Wi-Fi. The EZVIZ app works with all EZVIZ Cameras and alarm products. View and manage remotely wherever you are. 7.5m night vision viewing range. Allows you to view and record. Batteries required: 2 x Li-Ion (included). Size H254, W236, D270cm.