Please do the following to check if you have ticked this:   Video/ Audio  Please make sure whether your NVR/DVR supports audio output. If not, you cannot hear from the NVR directly. You need to check from the app on mobile or from pc with speaker. 

How to Find WIFI NVR Version? Right click your mouse on System Setup>System Admin>System Version How to Find WIFI Camera Version? Right click your mouse and System Setup>Channel Setup>IPC Upgrade

What to do when wifi signal of camera is weak and poor?  There are 3 ways you can try:  A:  Wifi Repeater in the NVR setting  Right click on NVR screen and choose "Video Manage" Click "Wifi Repeater" Find the one with strongest signal bar and the one with the weakest. Click + behind...

The following languages are supported for Wifi NVR Right click mouse>System Setup>General Setup>Language

  1）When the Eseecloud NVR is turned on and does not work normally, please power it off and uninstall the hard drive and unplug network cables. Reboot it and try restoring factory setting, Here is how: System Setup--System Admin--Factory setting---Apply. 2) If the Network Video Recorder works fine when turned on, please try A: Upgrade...