8 Channel H. 265+ 4K NVR and 8.0 Megapixel at 3840 x 2160 pixels H. 265+ Ultra HD Poe Built-In Two way audio cameras Capture high-definition 2160P Ultra HD 4K video four times higher than 1080P cameras. Built-in Microphone and Speaker for 2 Way Talk Hear and speak to people on your property from your mobile device. It will also expand your security coverage beyond the camera's field of view (FOV) and can help assist with interpreting events (even if they occur off-screen). Use the two way talk to scare off would-be burglars and stop crime before it happens.. The latest H. 265+ video compression can save up to 75% network bandwidth and video storage space. Power Over Ethernet single network cable directly connects each IP camera to the NVR supplying both power and a video signal. Perfect Quick QR-Code Scan remote access and control your system Connect your smartphone/tablet/PC/Mac to your system with a quick scan of the QR Code, remote access has never been so easy. Motion Detection & Email alert Send Email / text alerts / NVR's buzzer if motion is detected, catching every essential moment, save hard drive record storage. H.265+ 8MP High resolution Image Senor2160p @15fps, 1920p @30fps IP66 Weatherproof Aluminum Housing Material Day & night full day monitoring16 CH 4K H. 265+ Poe NVR*Support up to 4K 8MP/5MP Real-time each channel*Video In: 8CH (Poe), Video Out: VGA/HDMI (Up to 4K)*USB Port for mouse and backup: 2*PTZ Control: RS485, Network: RJ45, Capacity: 2 SATA for 2 HDDs, Up to 14TB each, total 28TB *Record Mode: Manual/Time Scheduled/Motion Detect recording Package Include1 x GW5508NPN: 8 Channel NVR with pre-installed 3TB Hard Drive 8 x GW8538IP: 8MP Two Way Audio camera 4 x GWCAT60: 60FT Cables4 x GWCAT100: 100FT Cables 2 Year and Free Tech Support