... External HDD recordingØ Multiple control methods: Front panel, remote controller, USB mouse, network controller.Ø Multiple recording ... .264Video Preview ResolutionUp to 1280*1024 resolution,Video Recording4CH 1280*720@25FPSVideo Playback4ch 1280*1024 ... detection, Video loss detectionI/O 4channel input,4channel outputNetwork Linkage AlarmRecording, Buzzer, PTZ control, EmailNetworkIE Remote Preview1 ...