User manual

4-pin Connector layout
Remarks:
 If the power supply is 12V, then the current of 12V output is limited to 1A. If there
are more than 3 cameras, we suggest that customers get power for other cameras
from the 12V vehicle power directly.
 RS485 and RS232 interfaces are optional.
 Ports:
DEBUG: testing port
EXTEND: intercom connection port
SD Card Installation
Unlock the unit with the key, making sure that the arrow points to he “UNLOCK” position.
Note: The lock also controls the power. When it is placed in the locked position, it also
means that the DVR is powered and ready to use. Before turning on, please make sure all the
cables in the system are well connected; otherwise, damage could occur.