| System | Main processor | Hi3521D |
| Interface | Preview | 1/4/8/9 |
| Video | Codec | H.265 |
| Monitor quality | VGA(1080P at most);HDMI(4K at most) | |
| Preview ability | 16*1080N(6 in 1) | |
| Encode ability | 16*1080N@15fps(6 in 1)/8*1080N(6 in 1) | |
| Decode ability | 16*1080N@15fps(6 in 1)/8*1080N(6 in 1) | |
| Multi-mode input | Analog：16*1080N；8*1080N; | |
| hybrid： 8*1080N（analog）+8*960P（network） | ||
| network：8*1080P+8*960P ; 4*3M；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 | 16ch(analog input mode) | |
| Search mode | Search by time, calendar, event, channel | |
| Storage & backup | Video storage | HDD, network |
| Backup mode | Network, USB hard disk, USB burner, SATA burner | |
| External Interface | Video input | 16ch BNC |
| Video output | 1ch VGA, 1ch HDMI | |
| Loop Vout | N/A | |
| Audio I/O | 2/1 | |
| Alarm I/O | 0（Can be extended to 4ch）/0（Can be extended to 1ch） | |
| Network interface | RJ45 10M/100M self-adaption | |
| PTZ control | 1*RS485, Support kinds of PTZ protocols | |
| USB | 2* USB 2.0 ports | |
| HDD | 1 or 2*SATA ports (Max | |
| Wireless | 3G, WIFI (extend via USB) | |
| General | Power supply | 12V2A or 12V4A |
| Power Consumption | <15W (without HDD) | |
| Working environment | Temperature:0℃—+55℃，Humidity:10%—90%，Atm:86kpa—106kpa |
