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    I need help to connect a microphone! DAHUA HDBW4421R-AS

    Hello group, I bought a camera DAHUA HDBW4421R-AS (http://fr.aliexpress.com/item/Dahua-4Mp-IPC-HDBW4421R-AS-IP-camera-network-camera-DH-IPC-HDBW4421R-AS-Support-POE-Micro/32409416351.html?isOrigTitle=true) and this NVR4108H-P recorder...
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