... 3808/3816Product Features: NVR3816: 16 channel @D1, 8 channel @720P, 4 channel @1080P IP camera inputs ... masking for each cameraOSDCamera title, time, video loss, camera lock, motion detection, recordingRecordingCompressionH ... Full screen, Repeat, Shuffle, Backup selection, Digital zoomBackup ModeFlash drive/ USB HDD/ USB CD& ... IP Search(Support Dahua IP camera, DVR, NVS etc)Max Remote Users20 Users ...