Dahua DH-XVR5104HS-4KL-I3 User Manual page 277

Parameter
Connect
Automatically
Refresh
Connect
Disconnect
Click Apply to complete the settings.
After the Device is connected to a Wi-Fi hotspot, in the Wi-Fi Info area, the current hotspot, IP
address, subnet mask, and default gateway are displayed.
5.15.1.4 Configuring 3G/4G Settings
You can connect a wireless 3G/4G module to the USB port of the Device and then access the Device
with the IP address provided by the module.
Not all models support this function.
Connect the wireless 3G/4G module to the USB port of the Device.
Select Main Menu > NETWORK > 3G/4G.
Description
Enable Connect Automatically.
After the Device is restarted, it will automatically connect to the nearest
hotspot that had been connected successfully.
Refresh the hotspot list. The self-adaption function such as adding
password is supported if such setting was once configured.
In the hotpots list, select a hotspot, and then click Connect.
To reconnect the same hotspot, disconnect first and then reconnect.
To connect to other hotspot, disconnect from the current connected
hotspot first, and then connect to the other hotspot.
To disconnect from a hotspot, click Disconnect.
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User's Manual