... operating system, quadruplex :preview, recording, playback, remote controlVideo inputSupport 16 chD1 / 16ch 720P ... detect, video lost; Alarm trigger the dvr’s recording, interlinked PTZ, voice notice ... research, manufacture and distribution of Security CCTV Cameras. We will make great ... system consisting of pro-sales, on-sales and after-sales service for clients. NVR 2 SATA II interface total 4TB H.264 ...