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UniFi Protect - Get started with the G4 Doorbell

The G4 Doorbell is a WiFi-connected video doorbell with a built-in display and two-way audio communication capability.

This article outlines the G4 Doorbell’s installation requirements and setup process, as well as answers frequently asked questions about the device.

Setup and power requirements

To use your G4 Doorbell, you will need:

  • A network video recorder (NVR), such as the UniFi Dream Machine Pro (UDM-Pro), UNVR, or Cloud Key Plus (UCK-G2-PLUS).
  • A UniFi Protect application hosted on any of the NVRs above. For more detailed setup instructions, see UniFi Protect - Getting started.
  • A 16-24VAC, 20-30VA power line.

Note: In existing installations in Europe, the doorbell chimes might be 230V, which may not function properly with the G4 Doorbell. We recommend confirming your chime and transformer are compatible with 24V AC. For a list of compatible chimes, please visit the G4 Doorbell product page.

While the G4 Doorbell has its own camera, it can also be used with other UniFi Protect cameras.

Install, adopt, and configure the G4 Doorbell

Follow the Quick Start Guide or watch the video below for step-by-step installation instructions.

Note: All wiring must be done prior to installing the G4 Doorbell. The bell itself must be connected in a series circuit including a chime box and a transformer.

You can also power your G4 Doorbell via a standard US electrical outlet using the UniFi G4 Doorbell Power Supply (G4-Doorbell-PS-US, available on the US store only).

To manage your newly installed doorbell, you need to adopt it to your UniFi Protect application.

For more information on the adoption process, see UniFi Protect - Adopt devices.

Set a G4 Doorbell’s display message

  1. Open your G4 Doorbell camera in the UniFi Protect mobile app.
  2. Tap on the Text icon at the bottom of the screen. 
  3. Select a preset message or enter a custom one:
    1. Tap on one of the available message options to apply it; or
    2. Tap Add a Custom Message and type the message that you would like the G4 Doorbell to display. 


Change the microphone settings

  1. Open your G4 Doorbell camera in the UniFi Protect mobile app.
  2. Go to the camera's settings.
  3. Adjust the sound settings in the Light & Sound section as needed.


Frequently asked questions

Does the G4 Doorbell include a bell or chime device?

The G4 Doorbell package doesn’t include a chime box device. For a full list of the G4 Doorbell’s package contents, refer to the Quick Start Guide.


Which chime boxes are compatible with G4 Doorbell?

Any wired chime box is compatible as long as the correct transformer is used.


What transformer should I use with the G4 Doorbell?

We recommend using a 16-24VAC, 20VA transformer with the G4 Doorbell.


What do I do if the chime box is not ringing or working properly?

Make sure you are using a compatible transformer that can power the doorbell and the chime box, such as a 16-24VAC, 20VA transformer.


Is the G4 Doorbell PoE?

No, the doorbell is powered by either a 16-24VAC, 20VA transformer, or a power supply unit, and uses WiFi for connectivity.


Will the G4 Doorbell work as a standalone device?

No, the G4 Doorbell needs to be connected to a network video recorder hosting the Protect application, such as the:


Does the G4 Doorbell work with wireless chime boxes?

No, the G4 Doorbell is only compatible with wired chime boxes.


What should I do in case I change my WiFi username and password?

If the username and password are changed for the WiFi that the G4 Doorbell uses, the G4 Doorbell will need to be reset to factory defaults and re-adopted to the UniFi Protect application.


How can I factory reset the G4 Doorbell?

To factory reset the G4 Doorbell:

  1. (if the G4 Doorbell is mounted) Press the button on the bottom of the G4 Doorbell to unmount it.
  2. Press and hold the small rubber button at the top of the back of the G4 Doorbell for 5 seconds, then release the button.


My G4 Doorbell frequently disconnects and reconnects to the Wifi. How can I fix this issue?

There are two main reasons for frequent G4 Doorbell disconnections and reconnections:

  • Weak WiFi signal: Check your WiFi connection in the Protect mobile app (in Camera Setting > Connection) or the web browser (in Camera Settings > Overview > Details > Link State). If the score is poor (<50%), try reducing the distance between the doorbell and the WiFi router or access point.
  • An incompatible power source of your G4 Doorbell: Please ensure that the transformer powering your doorbell is rated 16-24VAC, 20VA.


Can the G4 Doorbell be wired differently than shown in the Quick Install Guide or installation video?

Yes, although we recommend the standard wiring, more complex installations are supported. Any advanced configurations should be conducted by a qualified electrician. See UniFi Protect - G4 Doorbell Wiring Diagrams.

Related articles

UniFi Protect - Getting started
UniFi Protect - Adopt devices
UniFi Protect - Manage devices

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