Dahua Technology DH-XVR42 AN-I Series - Audio;Video Encryption

User’s Manual
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Install certificate
Step 3 Click
Browse to select the certificate that you want to install.
Step 4 Click Import.
5.19.5 Audio/Video Encryption
The device supports audio and video encryption during data transmission.
Step 1 Select
Main Menu > SECURITY > A/V Encryption > Audio/Video Transmission.