1).MPEG-4/H.264 Video compression format, G.729A audio compression format;
2).Support single channel real time, 4 channels non real time, and can select 5 record format at will (QCIF,CIF, DCIF,Half-D1, Full-D1);
3).Code/decode function can flexible set (video coder can transform to video decoder to realize audio/video analog output via setting);
4).DC 12V power supply, wide voltage range 8V-15V;
5).Reverse connection protection for DC input supported;
6).Built-in CCIR656 digital video interfaces for connection CCD sensor;
7).10MHz/100MHz network supported;
8).PTZ control and transparency
transmission mode supported;
9).6 channels alarm I/O interfaces can be set optionally, can set as transparency I/O interfaces (AuxI/O);
10).I/O and communication interfaces overvoltage protection;
11).Can expand multi- serial interface;
12).IE browse and setting supported, as well as Hengtong remote surveillance software;
13).Upgrade via network or serial interface supported;
14).Infrared remote-control mode supported;
15).Support video connection via mobile telephone(S60 series mobile telephone);
16).Be provided with motion detection, compression, pre-view functions, 4channels can set independently;
17).Can listen / talk with the remote center;
18).Many security functions are supported such as system locked, password verification, users' authority, MAC code verification, etc.
19).Fixed or dynamic IP as well as dynamic IP register supported;
20).RFC867, DTP timing functions;
21).Multicast and unicast supported;
22).Sending alarm to remote center via TCP/UDP;
23).Signal control for arm/disarm;
24).Can support DVR via download special software, and also can support NAS(SMB/CIFS).
25).Mini exterior (can be embedded into the camera or dome to produce network cameras or network dome).
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(HTDVS) 
Product Feature 