System

processor

Hi3520DV300

Hi3521A

Hi3531A

Video

Codec

H.264

H.264

H.264+/H.264

Encode

4*4M@8fps(AHD);4*3M@10fps(AHD)；4*1080P@15fps(5 in 1)；4*720P(5 in 1)

8*4M@8fps(AHD)；8*3M@10fps(AHD)；
8*1080P@15fps(5 in 1)；8*720P(5 in 1)

16*4M@8fps(AHD)；16*3M@10fps(AHD)；
16*1080P @15fps (5 in 1)；16*720P(5 in 1)

Decode

4*4M@8fps(AHD)；4*3M@10fps(AHD)； 4*1080P@15fps(5 in 1)；4*720P(5 in 1)

4*4M@8fps(AHD)；4*3M@10fps(AHD)； 4*1080P@15fps(5 in 1)；8*720P(5 in 1)

8*4M@8fps(AHD)；8*3M@10fps(AHD)；
16*1080P @15fps (5 in 1)；16*720P(5 in 1)

preview

4*4M@15fps(AHD)； 4*3M@18fps(AHD)；4*1080P (5 in 1)

8*4M@15fps(AHD)；8*3M@18fps(AHD)；8*1080P (5 in 1)

16*4M@15fps(AHD)；16*3M@18fps(AHD)；16*1080P (5 in 1)

Multi-mode

Analog:4*4M@8fps(AHD);4*3M@10fps(AHD

Analog:8*4M@8fps(AHD);8*3M@18fps(AHD)

Analog:16*4M@8fps(AHD);16*3M@10fps(AHD)；16*1080P @15fps (5 in 1) ；

4*1080P@15fps(5 in 1)；4*720P(5 in 1)

8*1080P@15fps(5 in 1)；8*720P(5 in 1)

        16*720P(5 in 1)

Hybird:2*4M (analog)+2*4M (network)

Hybird:4*4M (analog)+4*4M (network)

Hybird:8*4M(analog)+8*4M (network)

IP: 16*1080P; 9*1080P;16*960P；4*5M

IP: 8*1080P+8*960P; 4*3M ;4*5M

IP: 8*3M ;4*5M

Playback

4ch

8ch

8ch （synch-playback）

Audio

Compression

G.711a

Intercom

Support

Management

Record mode

Manual>Alarm>Motion detection>Timing

Inquire mode

Inquire by Time/Calendar/Event/Channel

Storage mode

HDD Storage, Network Storage

Backup

Network, USB, SATA

Interface

Video input

4*BNC（Support Coaxitron）

8*BNC（Support Coaxitron）

16*BNC（Support Coaxitron）

HDMI output

1*HDMI (MAX:1080P)

1*HDMI (MAX:1080P)

1*HDMI (MAX:4K)

VGA output

1*VGA (MAX:1080P)

Audio I/O

4/1ch

4/1ch

2/1ch

Alarm I/O

0/0

Ethernet port

1*10/100Mbps Ethernet port, RJ45 port

PTZ control

1*RS485, Support for multiple PTZ protocol

USB Port

2*USB2.0 ports

HDD

1*SATA interface (Up to 6TB)

1*SATA interface (Up to 6TB)

1*SATA interface (Up to 8TB)

General

Temperature

0 ℃ - + 55 ℃

Humidity

10% -90% RH

Power supply

12V/2A

Consumption

<10W（Without HDD）

Weight

Around1KG

Dimension

255mm(L)* 236mm(W)* 44mm(H)