This wireless camera kit includes 1 mini camera and 1 receiver, which providing you with a complete wireless security system, perfect for monitoring around your home or small businesses with great convenience. Powered by the included adapter and a extra battery clip for a 9V (battery not included). The size of camera is really small. This system can be applied to various areas, such as Surveillance for Shops, Factories, Warehouses, HOME - Monitoring Children, Elders, Visitors etc. The setup procedure is simple, just using a AV cable linking with above mentioned devices.