This article will list common compatibility issues between NVRs and cameras and provide corresponding solutions.

Why Do NVR and Camera Compatibility Issues Occur

With advancements in technology, there are now multiple hardware versions of NVRs, such as H3MB02, H3MB16, N3MB01, N2MB02, H3MB18, N5MB01, N6MB01, and N7MB01. Compatibility issues can arise when older hardware versions of NVRs are used with newly released cameras. For information on how to find your hardware version, please refer to: How to Find out System Information (Firmware Version) via Reolink Software

Symptoms of Compatibility Issues

Compatibility issues typically manifest in the following ways:

1. Black Screen on monitor: For example, Channel 7 may show a black screen.

2. “Connection Failed” Message: For example, Channel 8 may display a “connection failed” error.
black screen

3. Display Issues on the monitor: This includes problems such as distorted images, color misalignment, or stripes.
green screen

4. Camera cannot be recognized on NVR.

5. Unable to Access Camera Settings on the App/Client: Unable to load configuration settings.
App
fail to load (app)
Client
loading fail

5. Missing Features: For cameras that support spotlight, two-way audio, auto tracking or smart detection, you may find that the corresponding settings are not available on the App, Client, or monitor.

6. Unable to View Full Screen: Only multi-view mode is available, and full-screen preview does not work.

7. Resolution Stuck on D1: The resolution setting shows D1 and cannot be changed.

Fix Compatibility Issues

1. Ensure that your NVR is compatible with the camera: Introduction to Hardware Versions of Reolink NVRs.

For example, if your NVR hardware version is H3MB02 and your camera is an 811A, the compatibility table in the provided link shows that this NVR only supports 4/5MP cameras. Thus, the 811A is not compatible with your NVR. You should use a compatible low-resolution camera.

2. If compatibility is confirmed, update your NVR with the latest firmware: Reolink Firmware Update Failed.

When downloading firmware, select the version that matches your NVR's hardware version.

3. If these steps do not resolve the issue, please provide the NVR hardware version and camera model to the Support Team.