【3K Lite 16CH 4-IN-1 HD-TVI DVR with 2TB Security Grade Hard Drive】With the H.265 technology, which could double the data compression ratio, keep the high quality video even with low bit-rate, it allows you to maximize storage space and enjoy ultra-long recording. Support ultra-long continuous recording and backup by USB. Dvr can be set to automatically overwrite the oldest internally stored footage or you can transfer those video files by USB to a memory stick or external hard Drive. | 【Compatible with 720P, 1080P Security Cameras System】This 16 Channel 4-in-1 DVR which supports analog, HD-TVI, CVI, AHD camera. It provides you the flexibility to add 16pcs 720P, 1080P CCTV Security Cameras | 【AI Human/Vehicle Detection】Our advanced AI detection system can accurately identify any person or vehicle, giving you peace of mind. When the camera detects motion, intelligent instant notifications and email alerts will be sent to your phone. | 【Remote Access Anywhere Anytime】 The ZOSI Smart free app lets you see all of your cameras in one place. Check in on your home or business wherever you have an internet connection. Free ZOSI Smart App for Live View & Playback on Smart Devices with Wi-Fi or 2G/3G/4G Anywhere Anytime. | 【Customize Each Camera with Different Record Modes】Our ZOSI DVR offers 4 kinds recording modes to meet your needs: Record footage continuously; Record during scheduled times; Only record when detect motion; Recycle record. You can customize each camera with different recording modes, and download the recording files for the USB backup.