20HDD 4U 256CH Network Video RecoderHome > 20HDD 4U NVR
  • 20HDD 4U 256CH Network Video Recoder

Model: AS-N901-256E


1. Preview channel can be switched to other channel randomly without changing the MAC which is convenient for the project construction;

2. The dendritic menu can be moved. Man-machine communication is more direct and the settings of parameters are more easy and convenient;

3. The mouse roller can realize 15X digital zooming which the enlarged image can be dragged and moved randomly under preview and playback modes;

4. Immediate snapshot and immediate view; the picture will be stored in an independent area in the HDD;

5. The recording playback is shown by time bar and different color represents different recording type.  It is very fast and easy to find check the recording;

6. Recording backup can be accurate to second. Any time period of backup is available;

7. The recording files in the USB disk can play directly in the playback interface while the snapshot pictures can be viewed directly;

8. With WIFI wireless connection functions;

9. Standard resolution which can be adjusted according to the display device in order to get the best image quality;

10. Adopt HDD sequence writing method and the data is written from 0 track which increase 2.5X lifetime of the HDD




Operating System

Embedded LINUX operating system

Image Code Control

Image code quality adjustable, variable bitstream and constant bitstream optional

Dual Stream

Each channel can set main stream and sub stream

Video Standard

H.265/ H.264

Monitoring Image Quality


Image Motion Detection

Each screen can set multiple detection areas and set 6-level sensitivity

Recording Playback Quality

1/ 4/ 9/ 16 playback sync

Region Cover

 Every channel can set 4 cover regions(IPC Support)

Recording Mode

Support manual , auto, dynamic detection, alarm trigger record mode

Backup Way

Support U disk, USB mobile HDD, USB DVD-RW,

network storage and backup(Partly needs IPC Support)

Operation Way

 Mouse, Keyboard

Local Login

 Username and password

Recording Storage

 Local HDD, network

External Ports

 Video Input

 ①256ch 960P(1280*960) IP Camera

②128ch 1080P(1920*1080) IP Camera

③64ch 5MP(2592*1944) IP Camera

④36ch 4K(3840*2160) IP Camera

 Audio Input

1:1 network video: network audio

 Video Output

1ch VGA+1ch HDMI

 Audio Output

1ch RCA output

 Network Port

6 10/100/1000M self-adaptive LAN port +  1 10000M self-adaptive LAN port

 RS485 Port

Full duplex standard 485 port

 USB Port

2 USB 3.0 ports, 2 USB 2.0 ports

 Alarm Input


 Alarm Output


 Wireless Port



 HDD Port

20 SATA+4 E-SATA HDD ports

 MAX Capacity

Each port supports MAX 4TB HDD

Mobile Surveillance

Support( iPhone, Windows Mobile, BlackBerry, Symbian, Android) smart phone

Power Supply

ATX110-220V 500W 50-60Hz 

Power Consumption

≤50W(without HDD)

Working Temperature


Working Humidity




Weight(without HDD)

18.5kg, 1pcs/carton

Installation Way

Desktop Installation

Related Products
Scan QR CodeClose