4CH 1080P Wired Security Camera System, CCTV DVR with 512GB Hard Drive, 4 X Hom
Pre-installed 512GB HDD: 24/7 recording provides protection for the places you value. HDD Capacity 512GB 1TB N/A 512GB 1TB N/A. Without internet, the DVR is working normally, and you can view the surveillance on the local monitor.