Product details of Dahua XVR1B04-I 4 Channel DVR 2 Bullet 2 Dome Camera Night Vision 500GB HDD 4 Power Supply 8 BNC Camera Bulk Offer 2MP (1920 x 1080) at 30 fps Maximum Resolution 2.8 mm Fixed Lens Maximum IR Length 30 m (98 ft), Smart IR IP67 Environmental Protection Embedded Processor Four (4) Channel Pentra-brid Recorder 4 +2 IP Camera Channels, each channel up to 6MP 1080p at 15 fps Recording Resolution on All HDCVI Channels AI Coding Technology for High-quality Human/Vehicle Video Automatically Detects HDCVI, AHD, TVI, and CVBS Inputs Perimeter Protection and Smart Motion Detection (SMD) Maximum 32 Mbps Incoming Bandwidth