Audio Function, Make sure CVI and TVI DVR/XVR support (Audio Over Coax) function, otherwise will not working. Built-in MIC (CVI and TVI Format Only). Microphone Built-in Mic (TVI and CVI )Video Format Only.

Audio Function, Make sure CVI and TVI DVR/XVR support (Audio Over Coax) function, otherwise will not working. Built-in MIC (CVI and TVI Format Only). Microphone Built-in Mic (TVI and CVI )Video Format Only.

Audio Function, Make sure CVI and TVI DVR/XVR support (Audio Over Coax) function, otherwise will not working. Built-in MIC (CVI and TVI Format Only). Microphone Built-in Mic (TVI and CVI )Video Format Only.

Box was opened to inspect contents. No flaws or defects.