... control • Remote Configuration, Firmware Upgrade and Event (Alarm, Motion) Notification • Full duplex two way audio transmission Specifications: ItemsSpecificationsModel NameDV-2108Compression StandardH.264ResolutionPreview ... Voltage,Open or ClosedAlarm ModeSensor Input, Motion Detection, Video Loss, Full Disk Space.NetworkEthernet (10/100M ),LAN,WAN and ADSLControl WayUSB2 ...