| Model | 4CH | 8CH | 16CH |
| System | Mainprocessor | Hi3520DV200 | Hi3520DV300 | Hi3521A |
| Interface | Operatinginterface | support16-bittruecolorgraphicalmenuinterfaceandmouseoperation |
| Preview | 1/4 | 1/4/8/9 | 1/4/8/9/16 |
| Video | Codec | H.264 |
| Monitorquality | VGA、HDMI:HD |
| Previewability | 4*1080N | 8*1080N | 16*1080N |
| Encodeability | 4*1080N | 8*1080N@12fps/4*1080P@15fps | 16*1080N@12fps/16*960H/8*1080N |
| Decodeability | 1*1080N | 8*1080N@12fps/4*1080P@15fps | 16*1080N@12fps/8*960H/8*1080N |
| Multi-modeinput | analog:4*1080N；4*720P；4*960Hhybrid:2*720P（analog）+2*720P（network）;network:8*1080P;12*960P;8*720P;4*1080P;4*720P;1*1080P | analog:8*1080N；4*1080Phybrid:2*1080P（analog）+2*1080P（network）;4*1080N（analog）+4*960P（network）network:16*1080P;9*1080P;16*960P;4*5M | analog:16*1080N；8*1080N;16*960H;hybrid:8*1080N（analog）+8*960P（network）network:8*1080P+8*960P;4*3M;4*5M |
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| MotionDetection | Eachscreencanbesetto192(16*12)detectionareas;multi-levelsensitivitycanbeset(Limitedlocalchannel) |
| Audio | Audiocompression | G.711A |
| Intercom | support |
| Record&playback | Recordmode | manual>alarm>motiondetection>timing |
| LocalPlayback | 4ch(analoginputmode) | 8ch(analoginputmode) | 16ch(analoginputmode) |
| Searchmode | Searchbytime,calendar,event,channel |
| Storage&backup | Videostorage | HDD,network |
| Backupmode | Network,USBharddisk,USBburner,SATAburner |
| ExternalInterface | Videoinput | 4chBNC | 8chBNC | 16chBNC |
| Videooutput | 1chVGA,1chHDMI |
| LoopVout | N/A |
| Audioinput | 4chRCA | 4chRCA | 2chRCA |
| Audiooutput | 1chRCA |
| Alarminput | 0 |
| Alarmoutput | 0 |
| Networkinterface | RJ4510M/100M |
| PTZcontrol | 1*RS485,SupportkindsofPTZprotocols |
| USB | 2*USB2.0ports |
| HDD | 1*SATAports(Max8TB/per) |
| Wireless | 3G,WIFI(extendviaUSB) |
| General | Powersupply | 12V/2A |
| PowerConsumption | <15W(withoutHDD) |