Product Guide
All Products  >  CCTV DVR  >  Without Screen  >  TW-DH9304
4ch D1 DVR
Sale Points
1.4ch D1 real time recording
2.Audio input:1ch,Audio output:1ch
3.Dual-stream design
5.Support RS485
6.Support free DDNS domain name
7.Support 1pcs HDD,unlimited for the capacity
8.SupportMobile phone remote view
Use the standard H

Use the standard H.264 video compression format stream lower,high quality,longer recording time, taking up less bandwidth resources  

GUI OSD interface, more intuitive, easier to use for user-friendly

Support 4ch Full D1 real time recording resolution, ahead to D1 High-Definition period.

Dual-stream design, network remote view effects and local recording effects parameters can be set

separately, independently of each other.

Hexaplex operation simultaneously: Preview, recording,playback,backup,networklive,mobile phone


Support Multiple channel playback (Support 4CH playback simultaneously, each channel can be

enlarge to full screen)

Support Network function: One IE browser centralized monitoring and CMS Software for multiple DVR

(up to 255 DVR simultaneously)

Recording playback support: Normal play, Speed play, Fast back play, Manual single-frame slow play

Supports Built-in free DDNS domain name, with Server address: http://www.dvrcenter.com

Support Mobile phone remote view by Symbian S60V3/V5;WindowsMobile;Android system; Iphone;


System auto recovery to power after power reconnected, and return to the pre-power-down state 




 Video Compression Format 


 Video System 


 Video Input/Output(BNC) 

 4CH BNC input/1CH BNC output 

 Audio Input/Output 

 1CH audio input,1CH audio output(RCA) 

 Maximum Recording Rate
(each channel support at D1 real-time) 

 D1:704*480,120fps <NTSC> /704*576,100fps <PAL>
 HD1:704*240,120fps <NTSC> /704*288,100fps <PAL>
 CIF:352*240 ,120fps <NTSC> /352*288,100fps  <PAL>
 QCIF:176*120,120fps <NTSC> /176*144,100fps  <PAL>

 Image Quality Setting 

 Supper Best,Well,Good,Medium,Normal and Bad 

 Hard Disk Storage 

 Support one SATA HDD, unlimited for the capacity 

 Alarm Input/Output


 Multiplex Operation 

 Live display/record/playback/backup/network transmit 

 Recording Mode 


 Playback Mode 

 Multiple slow and rapid play speeds,manual and single-frame
 play modes,and support of drag the sliding bar to set.

 Backup Device 

 USB flash disk/USB remove HDD/Network/USB DVD-RW 

 Pre-alarm Recording 

 Recording for 10 seconds before alarming 

 Network Protocol 


 Ethernet remote view 

 Support remote surveillance up to 10 users simultaneously 

 VGA Interface 

 YES ,support VGA and BNC can work at the same time

 Log record function 


 Video Loss Detection 


 Video Adjustable 

 Hue /Saturation /Contrast /Brightness adjust 

 PTZ Control 

 YES , built-in RS485 port,support 17 kinds protocols

 IR Remote control/USB Mouse 


 Power Source 

 DC 12V  


 250(W) x 45(H) x 224(D) 


Front Panel


Reference Practical Product Connection Picture

Internet Explorer Surveillance Interface



CMS Interface


400 60
4th, A4 Buliding, Gui Gu Dong Li New Material Industry Park, Guanlan, Long Hua New District, ShenZhen, Post Code:518110
Toll Free:86-755-29018069, 86-755-83722468, Fax:86-755-29018068