Cameras with Built-in Microphone/Audio
Built-in Audio
Each camera comes with high-gain microphone built-in, now you can view and record HD videos with audio.
How to get audio work?
To get audio work, you need to enable audio in your NVR, here is how: Right click your NVR mouse to pop out NVR main menu, choose System setting - CH setting- Encode setting, change Encode mode to 'AV stream'.