AHD 4 Camera Kit 720P Bullet 3.6mm Full installation kit for AHD (Analogue High Definition) camera system Kit includes: Revez Tornado-4 720P 4 Channel AHD DVR 500gb Hard Drive (Upgradable from drop-down) 4 x 720P Bullet Camera 3.6mm Fixed Lens 4 x 20m BNC + 2DC Cables 12 Volt 5 Amp Power Supply 4 Way DC Splitter   This system is plug & play no configuration required. DVR supports P2P Cloud technology allowing the mobile viewing of cameras through your Android or Apple phone by simply scanning a QR code.