41/42 Common Questions & Troubleshooting

Flashing HD light is indicating hard drive activity. If the system is writing data to the hard drive, the light will flash.

The app for the NVR is Guard Viewer. You can download it from Apple app store or Google Play store

The NVR will support any network cameras using ONVIF protocol. To find out if your camera has ONVIF protocol, please refer to your camera’s user manual.

The issue could be bad power supply or bad hard drive causing the issue. Please remove the hard drive and see if the NVR could power on normally.

1. The camera you are using with the NVR needs to have a built-in microphone.
2. The monitor/TV you are using is connected to the NVR via HDMI connection to hear audio.
3. Make sure the channel isn’t muted. There will be an audio icon displayed when the channel is not muted. Click on the specific channel and make sure the audio speaker icon does not have a “”X”” next to it.

  1. How to add 3rd party cameras or GW camera on the network

    Using the NVR’s console

    1. Gather the required camera information
      1. Camera’s IP address
        1. It should be in IPv4 format
      2. Camera’s login credentials
        1. Some cameras require separate login credentials for ONVIF protocol. Please refer to your camera’s user manual for more information
        2. GW camera does not require separate credentials for ONVIF. You can use the same credentials for web interface access and paring cameras to NVRs.
          1. GW camera’s default username is admin
          2. Default password varies among camera models. The most common default password is 123456. Other variances are 888888 or admin. 
      3. Camera’s ONVIF port
        1. In most cases, the default ONVIF port is 80. In most cases you can find this information using the camera’s web interface.
        2. GW camera’s ONVIF port is 80.
    2. Log into your NVR and navigate to Camera -> Camera
    3. Click on “Cam Config”. Add mode choose “IP address”
      1. Enter the camera’s information gathered in step one. Click on OK after completion. 
    4. You will see a lit up Status icon if the connection is successful:
    5. Please note, if you want to connect 3rd party cameras to NVR’s built-in PoE switch, the IP address of the camera will need to be pre-configured to match the “PoE NIC IP address” scheme. The default is You can find the IP address assigned to each channel by looking at the camera setting section on the NVR

    Using Web interface

    1. Gather required camera information
    2. Log into NVR’s web interface
    3. Navigate to Setup -.> Camera -> Camera. Select a channel a click on “Modify”
      1. Add mode change to “IP address”
      2. Enter all the other camera information accordingly. Click save when done.

How to add 41/42 series NVR to Guard Viewer app and start remote view.


  1. Download Guard Viewer app from your respective app store (Apple App Store for iOS. Google Play Store for android devices. 
  2. If you do not have an account, click on sign up and register for an account.
  3. After successfully registering an account and logged into the app using the newly created account, you will be presented with the Live View screen. Tap on the menu icon on the top left corner and choose Devices
  4. Tap on “+ Add” to start adding your device. You can either:
    1. Scan the QR code you find from the NVR’s main interface
      1. Move the mouse pointer to the bottom to bring up the menu bar then click on “Scan”
      2. Use your phone to scan the QR code
    2. Manually add the NVR by entering the IP address.
      1. Enter your NVR’s local IP address and login credentials. Tap on the save icon on the top right
      2. After the device is added using local IP address, tap on the device listed in app’s device list then choose “Bind Cloud Account”     
      3. Another device will be added to the device list which can be accessed remotely.
    3. Auto search in LAN
      1. When your phone is on the same network as the NVR, you can scan the local network to add the NVR.
      2. Select the device in the result list and choose add. The app will ask you to provide the NVR’s login credentials. Enter the correct credentials then click on add.
      3. After adding the device, the app will reverb back to “Auto search in LAN” screen. Tap on the back arrow on the top left corner to go back to the device screen. You should see the device listed.
  5. Tap on the added device and choose “Start Live View” to gain access to your camera feed.

41/42 series: How to access the web interface on Windows 


For older versions which only Internet Explorer is supported

  1. Find the NVR’s IP address. From NVR’s main view, move your mouse towards the bottom of the screen to pull up the menu bar. Hover over the network icon to find the IP address:
  2. Open Microsoft Edge. Go to Settings and More -> Settings
  3. On the left panel, click on “Default Browser”. Set “Allow sites to be reloaded in Internet Explorer mode (IE mode)” to “Allow”
  4. Open a new Tab by clicking on the “+” sign on top. Type in the IP address of the NVR in the URL bar, then press “Enter”
  5. You will be redirected to the NVR’s web interface login screen. Before clicking on the top link to download the plug in, right click on the tab and select “reload tab in Internet Explorer Mode”
  6. If you have done this correctly, you will see Internet Explorer icon next to the URl bar. You can now click on the link to download the plugin and install it.
  7. After installation is complete, reload the page by clicking on the reload button
  8. If installation is successful, the yellow plugin prompt on top will not appear. Enter your NVR’s credentials to log into the web interface


Newer versions of NVR’s web interface are accessible from Google Chrome and Firefox. You will have to install the plugin when prompted. 

41/42 series: How to back up recordings.


From NVR console directly:

Method 1.

  1. Connect a USB thumb drive to the NVR
    1. The system will prompt you with what you want to do with the USB thumb drive, choose “Recording Back up”. You will have to log into the system if not already logged in. The system will then bring you to the Recording backup screen. Skip to Step 4
    2. If you are not prompted with choices on what to do with the thumb drive, continue to step 2.
  2. Right click on the mouse to pull up the pop up menu and choose “menu”:
    1. If prompted by the system to login, please use your 1.pattern lock or choose 2. enter password to unlock the system:
  3. From the main menu, navigate to Backup -> Recording
  4. Choose the desired channel by placing/removing check marks next to the channel number (D1, D2… etc. ). Modify the Start time and End time to the time frame you wish to back up. Click on “search” will bring up the result window:
  5. Select the available video segment you wish to back up and then click on backup. You will be prompted with the partition and location selection screen. From here, you can choose to format the USB drive if necessary, create a folder in the USB drive and then back up to the created folder, or back up to the USB drive’s root directory by clicking on “Backup”:
  6. Remove the thumb drive after backup is complete.

Method 2: backing up while playing back videos.

  1. Video Clipping:
    1. Click on “Start Clipping”
    2. Use the mouse and drag the red bookmark to the desired location on the playback timebar, then click on “Stop Clipping”
    3. Click on File Management:
    4. Choose the file then click on “back up” (Note: If have not already done so, please connect your USB thumb drive to the NVR)
    5. You will be prompted with the back up option. From here, you can choose to format the USB drive if necessary, create a folder in the USB drive and then back up to the created folder, or back up to the USB drive’s root directory by clicking on “Backup”:
  2. Video Lock (best used when recording motion events only)
    1. When playing back, click on the specific channel you wish to back up and choose “lock”         
    2. Click on “File Management”
    3. Select the available files under locked file and then click on “Backup”
    4. You will be prompted with the back up option. From here, you can choose to format the USB drive if necessary, create a folder in the USB drive and then back up to the created folder, or back up to the USB drive’s root directory by clicking on “Backup”:

From the Web interface:


  1. Before downloading, it is recommended to set up the save file path.
    1. Click on Setup, then navigate to “Client”. Click on “Browse”
    2. Choose a folder you wish to save the files to, then click on “OK”
  2. Click on “Playback”, then click on the icon next to the channel name:
  3. Select the camera/channel you wish to download videos for, choose the time interval you want to search for, then click on search:
  4. Select the files you want to download from the search result then click on download. The files will be downloaded to the folder specified in step 1. 


Using the video clipping option while playing back


  1. While playing back the video, click on “Start Clipping”
  2. Enlarge the playback timeline by clicking on the zoom in icon towards the right side of the timeline or by hovering the mouse over the timeline and scroll up on the mouse wheel:
  3. Drag the orange playback bar to skip ahead on the playback timeline. Once you found the end of the video clip you want, click on the snipping icon again: 

Click on the save icon next to the snipping icon. You will see a list of available files. You can make multiple snippets and see them all listed in the download window. Choose the file you wish to download and then click on “Download” to start the process. The files will be saved in the previous defined file path.