... preview and playbackf. Support Camera title, time, video loss, camera lock, motion ... 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 ... system consisting of pro-sales, on-sales and after-sales service for clients. NVR 2 SATA II interface total 4TB H.264 ...