Model
DVS901AT, DVS902AT 1ch/2ch  D1 halfD1
DVS901BT, DVS901BT 1ch/2ch CIF

Features:
>H. 264 compression algorithm for network transmission
>Real time live network display, multiple level image resolution supported: D1/ HalfD1/ CIF/ QCIF
>MP3 audio format with mono or stereo for your option.
>Self-adjustable frame rate to fit the network bandwidth.
>Powerful alarm function supporting video motion, video mask, sensor alarm, etc.
>RS-422/485 port for virtual serial port transmission, PTZ, Speed dome camera control etc.
>Two-way talk real time.
>Windows Media Player to play the recording data.
>Dynamic IP address supported, LAN & Internet (ADSL, PSTN, ISDN, etc)
>Built-in web server to access the web page remotely with IE browser
>Abnormality recovery automatically, support auto-reconnection when there's network break.
>Multiple users can access it simultaneously, multi-grade password protection.
>Networking access for remotely live viewing, recording, playback, setting, etc.

Video: 2ch, BNC Connector, NTSC/ PAL
Audio: 2ch Audio input, MP3 compression, Sampling 32KHz, 44.1KHz, 48KHz, Output 8Kbps--128Kbps
Compression: H. 264
Resolution: CIF
Image Speed: Each channel Max 30fps adjustable
Alarm: 2ch input, 2ch output, support the alarm of Video mark, motion, sensor, video lost, etc
Network: Support with IE, monitoring, managing, setup, updating
Protocol: TCP/IP, UDP, MULTICAST
Network: PSTN, ISDN, ADSL, LAN, WAN; Support dynamic IP
Hardware Interface: 10/100M; RS485; Alarm in/out
Hardware case: High quality aluminum material
Dimension: 180mmx 150mmx 44.5mm
Temperate: -10C - 55C