GS-009B4 4CHANNEL GS-009B8 8CHANNEL GS-009B16 16CHANNEL GS-009B24 24CHANNEL MAIN FUNCTIONS: 1. Recording/Saving 2. Displaying and Backup 3. Alarming: 4. Internet Function: Support TCP/IP agreement, you could manage multiplied VDR through the PC host 5. IE Viewing Function: 6. PAN LENS CONTROL