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4ch SD card recording 720P mobile DVR
Analogy AHD TVI CVI 720P mobile DVR
4 ch video and audio input,1ch audio output,1ch VGA output
1. Power adapter:
Professional design for vechile 9-36VDC voltage input(Standard ISO7637-P5A-200V/Static electricity GB/T-17626/RE radiation EN55022)
protection circuit for undervoltage, short circuit, reverse connection ect. suit for any typle vechile.
Support intelligent power management identification, low power automatic shutdown, turn off low power consumption;
2. data storage:
The use of special file management mechanism, the data encryption, effective protection of data security;
proprietary SD card bad sectors detection technology, both to ensure video continuity, but also extend the SD life;
Built-in super capacitor, to avoid abnormal power loss and SD card damage;
Support SD card storage, support 256G;
3. the interface transmission:
Support GPS / BD positioning, high sensitivity, fast positioning;
4. support reversing image technology, and free configuration! 
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introduction
Check the details on link:https://youtu.be/zsnmymuSlY0 
Item Device parameter Performance
System Main processor Hi3520DV200
Operating system Embedded Linux OS
Operating language Chinese/English
Operating interface GUI, Support mouse
Password security User password/Admin password
Audio
&
Video
 
Video standard PAL/NTSC
Video compression H.264
 Image resolution 720P /960H/D1/CIF
Playback quality 720P /960H/D1/CIF
Compound mode 4ch 720P/4ch 960H/2ch 720P+2ch 960H
Decoding ability 1ch 720P real time
Recording quality Class 1-6 optional
Image display Single/QUAD display optional
Audio Compression G.726
Audio recording Audio & Video synchronized recording
Recording & Playback Recording mode Manual/Alarm
Video bit rate Full frame 4096Mbps,6 classes image quality optional
Audio bit rate 8KB/s
Storage media SD card storage
Video inquiry Inquiry by channel/Recording type
Local playback Playback by file
Firmware upgrading Upgrading mode Manual/Automatical/Remote
Upgrading method USB disk/Wireless network
Interface AV input 4ch aviation interface
AV output 1ch VGA video output, 1ch aviation AV output
Alarm input 4 digital inputs (2 Positive trigger, 2 negative trigger)
SD card 1 SDXC High speed card (up to 256G)
USB interface 1 USB 2.0 (support U disk/mouse)
Ignition input 1 ACC signal
UART 1 LVTTL Level
LED Indication PWR/RUN/SD/ALM
SD card lock 1
Debug port 1
Function extention GPS Support detecting antenna Plug in/Unplug/Short circuit
WIFI No
3G/4G No
Others Power input 8~32V DC
Power output 5V 300mA
Power consumption Standby 3mA
Maximum consumption 18W  @12V 1.5A @24V 0.75A
Working temperature -20 --- 70℃
Storage 720P   1G/h/channel     
960H  750M/h/channel
Dimension 142*153*32 mm

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