... HDD supported, USB flash drive, DVD-RW drive, remote backup supported, mouse operation and IR controller operation ... 16Recording modeManual, schedule, alarm, motion detectionStorageLocal or from remote sitePlayback modeSearch by time, event, channel, logMotion ... ch audio output, BNC, 2Vp-p, 600ΩTwo way talk1chOutput sampling rate8KHzSample size16bitWorking environmentNetwork Port1 pc 10/100M ...