< Back to list

B861AJ Series - 4K Battery Doorbell - Troubleshooting Guide

The following article addresses common troubleshooting issues regarding the 4K Battery Video Doorbell. Where applicable, the troubleshooting guide includes links to articles where you may find more information.


I need to install My Battery Doorbell?

For optional wired setup:

For more information please read our Installation Guide.


I need to reset my camera:

  1. Pull back the RESET/MicroSD card slot cover located on the side of the video doorbell.
  2. Press and hold the Reset Button for 10 seconds until you hear the audio prompts.

Reset button


I hear an echo when I use 2-way talk (iPhones Only)

Users experiencing an echo or other audio issues, should upgrade their iPhone firmware to iOS 16.1 or later.


I need to remove my doorbell from its bracket:

To remove your doorbell from the bracket, hold onto the doorbell, and then insert the Release Pin into the hole at the bottom of the Mounting Bracket until the release tab is reached.

Removing the doorbell


Cannot Pair to the Lorex App

Temporarily disable any active VPN on your mobile device, as it may block the camera’s connection.

⚠ Note: Once pairing is complete, you can re-enable your VPN for regular use.

For iPhone/iOS:

  1. Go to Settings > VPN.
  2. Toggle the VPN switch off.
  3. Retry the onboarding process after disabling the VPN.

Disable VPN in settings

For Android:

  1. Go to Settings > Connections > More connection settings > VPN.
  2. Turn off the active VPN or disconnect from it.
  3. Retry the onboarding process after disabling the VPN.

Disable VPN in settings


I need in insert or remove a MicroSD card

  1. Pull back the RESET/MicroSD card slot cover located on the side of the video doorbell.
  2. If inserting, slide the MicroSD card into the slot (with the label side down) until it clicks into place.
  3. If removing, push down gently on the MicroSD card. It will pop out and can then be removed.

I get an offline message and a blank screen for the doorbell's channel on the Fusion recorder?

Being a battery-operated doorbell, it will always go to sleep after a period of inactivity to conserve battery life. Once the doorbell is correctly paired to your Fusion recorder, the offline message means the doorbell has gone to sleep but is still connected and can be awakened. When motion is detected, or when the call button is pressed, there will be live video from that channel. You can also manually wake up the doorbell through the Lorex app, by activating the liveview.


My doorbell is not turning on:

  • During setup, make sure your doorbell is connected to power and turned on. Press the reset button to initiate pairing.
  • Check that the USB cable is connected to to the power adapter and plugged into an outlet.
  • Make sure you have the right adapter voltage (5V 2A) (not included).
  • Check if the power outlet is working properly: Connect another device and power it on.
  • Make sure the breaker is turned on. Wait 5 minutes for the doorbell to fully power on and press the doorbell’s button to ensure that the chime is operating correctly.
  • Make sure the power source is 8-24V AC. Check the voltage printed on your transformer and/or use a multi-metre to test the power.

Refer to the article “What transformer should I use with my Wired Video Doorbells?” for more information.


For more information, please read out Frequently Asked Questions.


Rate This Article
Was this article helpful?