Instructions for using Dahua Video Doorbells (VTO – VTH)

Currently, Doorbells – Monitors are quite popular and widely used in apartments, condos, villas, private houses, etc. To better support installation and use, in In this article, I will guide you how to use and install Doorbell – Dahua Monitor, Kbvision.

1. Video Doorbell Quick Connect (v4.5) & Monitor (v4.7) using ConfigTool

Before proceeding, please update the device Firmware to the latest version:

  • Doorbell: V4.5 or higher
  • Screen: V4.7 or later

You can download the latest device Firmware here: https://www.dahuasecurity.com/Products/All-Products/Video-Intercoms/ or contact the Distributor where you import the goods to support updating the new version most.

Action to perform:

2. Quickly connect 1 doorbell + 1 Dahua, Kbvision screen using ConfigTool

Before proceeding, please update the device Firmware to the latest version:

  • Doorbell: V4.5 or higher
  • Screen: V4.7 or later

You can download the latest device Firmware here: https://www.dahuasecurity.com/Products/All-Products/Video-Intercoms/ or contact the Distributor where you import the goods to support updating the new version most.

Action to perform:

3. Quickly connect 2 doorbells + 2 Dahua and Kbvision screens using ConfigTool

Before proceeding, please update the device Firmware to the latest version:

  • Doorbell: V4.5 or higher
  • Screen: V4.7 or later

You can download the latest device Firmware here: https://www.dahuasecurity.com/Products/All-Products/Video-Intercoms/ or contact the Distributor where you import the goods to support updating the new version most.

Action to perform:

11. Troubleshooting: When the new phone calls to the old screen, the screen is black

If you are using Dahua doorbell, Kbvision (new product 2023 and later), combined screen used Firmware before 2022 has a situation where the connection is successful but when calling, the video and images are not displayed. Please set as follows:


  1. What is the Alarm-Out port on the screen used for?
    > Used to connect to the siren, when there is a call from the bell to the screen, the circuit will be closed and the siren will make a sound
  2. What is the maximum number of Doorbells – Monitors connected in the system?
    >