I look for IP camera with external microphone. On picture there is external microphone. But when i camera was delivered there is no extrnal microphone. After investigating I found that it has internal microphone inside. But this internal microphone is no useful. Because you have to shout to get sound. And another complience - periodical bip,bip, bip... This id the only sound you can get from this camera.
Works, Onvif support, did not get it working in VLC, but succesfully added the camera with the given link in the description to Synology Surveillance Station. Picture quality is good (5MP version).