How can we rely on our cameras to perform when the electricity we depend upon is knocked out due to severe weather, vandalism or transformer surges? Introducing the worlds first, one-of-a-kind, Integrated Battery Backup Video Security System. Night Owls HDA10P842BB 4 Camera 8 Channel DVR Video Security System will reignite your peace of mind with an all-in-one solution to any power outage. This cutting edge DVR incorporates a built-in battery backup system that enables the unit to continue capturing video for up to 2 hours, in the event you experience power loss. Not only does this system limit the wear and tear associated with power spikes and surges, it also alleviates the need for multiple power cords and adapters since the DVR serves as the hub of power for every camera. This truly is innovation at your fingertips!