Swann SWDVK-414252-US Advanced Series D1 4-Channel DVR with 500GB HDD and 2 x 540TVL PRO-510 Cameras (Black) View & record from 4 cameras simultaneously during the day, night, indoors or outdoors Includes 2 all-weather, high resolution 540TVL Swann TruColor (STC) cameras with powerful infrared night vision to 65ft / 20m Video Format: NTSC or PAL Video Inputs: 4 x Channels BNC Video Outputs: Vudei VGA, HDMI Display Resolution: 1024 x 768, 1280 x 1024, 1280 x 720, 1920 x1080 Display Frame Rate: NTSC: 30fps/channel / PAL: 25fps/channel Audio Input: 4 RCA Input Audio Output: 1 RCA Output Compression Format: H.264 Recording Resolution: NTSC: D1 (704 x 480), CIF (352 x 240) PAL: D1 (704 x 576), CIF (352 x 288) Recording Frame Rate: NTSC: 30fps D1 / PAL: 25fps D1 Recording Modes: Manual / Schedule / Motion Multiplex Operation: Multiplex HDD Interface / Memory Type: 500GB SATA2 HDD (installed) Hard Drive Support: Up to 2TB SATA2 HDD Video Quality: 540 TV Lines Minimum Illumination: 0 Lux (IR on) Viewing Angle: 60 degrees Night Vision: Up to 65ft / 20m Number of Infra-Red LEDs: 24 Operating Power: DC 12V Operation Temperature: -4 F to 113 F