FAQ

How to Add Audio to ZOSI DVR Security Camera System? Our DVR has four audio input ports and one audio output port, you need to purchase a security microphone, and use audio cable to connect it in a location where you want to capture audio, then connect a loudspeaker to the audio output port.

What if I can't play back the previous 24 hours of recordings of ZOSI Security DVR?

1. Register a new Gmail account, and log in.2. Get into your mailbox>click the “”in top right of page>get int...

What if you changed the resolution of DVR system accidentally, and cannot get any display on TV from the DVR. Your ...

It sounds like the DVR / NVR system is experiencing a firmware crash. Manually applying a firmware update should help it to function normally.

If you have found the correct upgrade file to upgrade the DVR / NVR system, but you're not seeing an "updating..." message on the screen for at least three minutes, the DVR / NVR isn't detecting the update file. There are a few reasons this could be.

If you can't play the AVI videos on your PC, please download the following player: https://ansjerfilemanager.s3.ama...

1. If you buy the hard drive from our company, but it can't be recognized by our DVR/NVR system, please follow up t...