A security system for monitoring whatever is important to you. Monitoring day and night, and in any rainy weather. Fully wireless with rechargeable batteries. The package comes with 4x HD cameras with sound, rechargeable battery, AC adapter, charging cable, base station with a built-in siren, power cord, mounting system on the wall. Consisting of a wireless camera, which brings many advantages! There is no need to deal with electric cables and power supply. A full range of accessories for cameras are available seperately, they happen to use the camera system to makes using Arlo literally a breeze. The system uses a rechargeable battery with an easy option to exchange. Its advantage is the increased flexability for maximum protection of your home and space.