Figure 3-6
3.3.2 SIM Card/SD Card Installation
This series product supports built-in SIM card/SD card. See Figure 3-7.
Step 1 Remove the HDD box.
Step 2 Insert the SIM card and the SD card to the corresponding slot.
Figure 3-7
Step 3 Install HDD box.
3.4 Alarm Input and Output Connection
There are two alarm input types for you to select: normal open (NO) and normal close (NC).
1. Alarm input
a. Alarm input supports grounding alarm input.
c. When the alarm device is connecting one DVR and one other device, please use a relay to
separate them,
2. Alarm output
The alarm output max load shall be less than 0.5A. It should not be connected to high power load
directly to avoid high current which may result in relay damage. Please use the co contactor to
realize the connection between the alarm output port and the load.
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