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The USB AHD 720P Mobile DVR with 4 channel AHD auido video/ CVBS audio video input; 720P recording; 1 AV output,1 VGA output；Unique file management with encryption technologe to make sure the information saftey；bulit-in super capacitor incase of date lost and SD card fail for power off.
| Item No. | EV-606DVR-AHD |
| Image Display | Mulit images display switchable |
| System | PAL/NTSC |
| Video Input | 4 channel AHD (1280*720)720P |
| Audio Input | 4 channel |
| Signal Output | 1 AV output,1VGA output |
| DVR Recording | Support 4 channel AV recording |
| Storage Device | support HDD(max. 2TB) or 1 SD card (max. 256G) &HDD (max. 2TB) |
| backup type | Network backup, HDMI backup |
| Wireless interface | Support 3G/4G LTE/ HSUPA/ HSDPA/ WCDMA/ EVDO/TD-SCDMA |
| Power | DC 9-36V input |
| Size | 162*153*52（mm) |
http://www.rearviewsys.com/