... , backup & remote accessVideo inputSupport 4 channel D1, 720P and 1080P inputDisplayHD output: VGA port*1, HDMI port*1, support 1280×1024 ... getting front-end PTZ protocolAlarm function1. 4 channel alarm input, 1 channel output 2. Alarm trigger: motion detect, video lost;3. ... the dvr’s recording, interlinked PTZ, voice notice, alarm output and snap picture.4. support alarm information send the WEB Port ...