4CH,3G,GPS WIFI,HDD DVR

·Hi3520D Solution; Support 720P HD,  720P,D1, CIF optional, support analogue and AHD mix mode;
  ·All real-time Record video, 1-25 Frame adjustable; H.264 algorithm.
  ·Read video file directly from the  hard disk , without using any software.
 ·support  4way video and audio input
  ·very Wide voltage 9-36V, over Voltage, over current and short circuit protection.
 ·To provide  an independent external 12V 2A voltage for camera
  ·Air-head connector cable ，not easy loosening
 ·Support 1 PC hard disk and 1 PC 128G SD card at the same time