Specifications: Model : 3000H4C4+ / 3000H4C8+ / 3000H4C16+ Video Input : 4xDCIF or 2xD1 / 8xDCIF or 4xD1 / 16xDCIF or 8xD1 Audio input : 4 / 2 , 8 / 4 , 16 / 8 Compression : H.264 (Hardware support) Video Format : PAL / NTSC Displaying speed : Every channel PAL:25fps@D1, NTSC: 30fps@D1 Recording Speed : Every channel PAL: 25fps, NTSC: 30fps Picture Resolution : DCIF: 528x384@32bit true color D1:704x576@32bit true color Image Size : 0.5K~8.0K Dual-stream : Yes Motion Detect : Yes Watermark : Yes DI/DO : Yes (Selected) PTZ Control : Yes Network Connection : LAN / PSTN / ISDN / ADSL / Internet OS : Windows all platform (both 32 bit and 64 bit)