NO80. How to make recordings with sound in recorder?

There is no speaker nor microphone in the recorder.

1.Make sure your DVR has RCA red audio cord at back of DVR.

2. Hook up a microphone to DVR by audio cable.

The microphone should be put next to one camera so that that camera's image and sound are sychronized.

Important: Microphone is not included.

Besides, you need enable audio in recording.

You can also connect a speaker into audio-out port of DVR.

Here is a form about sound function.

Purpose	A microphone connect to audio-in port of DVR	A microphone connect to audio-out port of DVR
Recording in hard disk drive not only has image, but also has sound. Or man kann hear sound when play recordings on PC which is backed up from HDD.	necessary	not necessary
Man can hear sound when watching live view on monitor. (click speaker icon on monitor to enable it first)pic 1 below	necessary	necessary
Man can hear sound when watching live view on PC.(click speaker icon on PC to enable it first) pic 2 below	necessary	not necessary
Man can hear sound when watching live view on phone. (click speaker icon on phone to enable it first)pic 3 below	necessary	not necessary
Man's voice can reach to camera's side when speaking to phone app's microphone	not necessary	necessary
Man's voice can reach to camera's side when speaking to computer's microphone	not necessary	necessary
Man can hear sound when watching playback of recording in HDD on monitor	necessary	necessary
Man can hear sound when watching playback of recording in HDD on PC	necessary	not necessary
Man can hear sound when watching playback of recording in HDD on phone	necessary	not necessary