| System | Main processor | Hi3521D |
| Interface | Preview | 1/4/8/9 |
| Video | Codec | H.265+ |
| Monitor quality | VGA,HDMI：HD | |
| Preview ability | 8*5M@12fps / 8*4M@15fps / 8*3M@18fps / 8*1080P | |
| Encode ability | 8*5M@6fps / 8*4M@8fps / 8*3M@10fps / 8*1080P@18fps | |
| Decode ability | 2*5M@6fps / 8*4M@8fps / 8*3M@10fps / 8*1080P@18fps | |
| Multi-mode input | 8*5M；8*4M;8*1080P | |
| 8*4M（analog）+8*4M（network）; 4*4M（analog）+4*4M（network) | ||
| 8*1080P+8*960P;4*3M;4*5M | ||
| network：16*1080P; 9*1080P;16*960P; 4*5M | ||
| Motion Detection | Each screen can be set to 192 (16 * 12) detection areas; multi-level sensitivity can be set(Limited local channel) | |
| Audio | Audio compression | G.711A |
| Intercom | support | |
| Record & playback | Record mode | manual>alarm>motion detection>timing |
| Local Playback | 8ch(analog input mode) | |
| Storage & backup | Search mode | Search by time, calendar, event, channel |
| Video storage | HDD, network | |
| Backup mode | Network, USBhard disk, USB burner, SATA burner | |
| External Interface | Video input | 8ch BNC |
| Video output | 1ch VGA, 1ch HDMI | |
| Loop Vout | N/A | |
| Audio I/O | 4/1 1/1 | |
| Alarm I/O | 0（Can be extended to 4ch）/0（Can be extended to 1ch） | |
| Network interface | RJ45 10M/100M self-adaption | |
| PTZ control | 0 or 1*RS485, Support kinds of PTZ protocols | |
| USB | 2* USB 2.0 ports | |
| HDD | 1 pr 2*SATA ports (Max 6TB/per) | |
| Wireless | 3G, WIFI (extend via USB) | |
| General | Power supply | 12V/2A or 12V/4A |
| Power Consumption | <15W (without HDD) | |
| Working environment | Temperature:0℃—+55℃，Humidity:10%—90%，Atm:86kpa—106kpa |
