Upgrading to a Ring video doorbell is a great way to boost your home’s security and convenience. But installing a Ring doorbell requires figuring out the right transformer to provide power to the device.

Keep reading this comprehensive guide to learn all about selecting the proper transformer size for seamless Ring installation and performance.

If you’re short on time, here’s a quick summary: Most Ring doorbells need a transformer that outputs 16-24 volts AC and delivers 10-30 VA of power. A 16- or 24-volt, 30 VA transformer is recommended in most cases.

How the Ring Doorbell Gets Power

The Ring Doorbell, a popular smart doorbell, requires power to function properly. It is important to understand how it gets its power, whether it is through a wired connection or a battery-powered option.

Wired vs Battery-Powered

One option for powering your Ring Doorbell is through a wired connection. This means that the doorbell is connected to your existing doorbell wiring, which provides a constant source of power. With a wired connection, you don’t have to worry about recharging or replacing batteries, as the doorbell receives power directly from your home’s electrical system.

If you choose the wired option, make sure that your existing doorbell wiring is compatible with the Ring Doorbell. It is recommended to consult a professional electrician if you are unsure about the wiring or if any modifications are needed.

On the other hand, if you don’t have existing doorbell wiring or prefer a simpler installation process, you can opt for the battery-powered version of the Ring Doorbell. This option allows you to easily mount the doorbell without any wiring required.

The Ring Doorbell comes with a rechargeable battery that can last for several months depending on usage.

When the battery needs to be recharged, simply remove it from the doorbell and connect it to a power source using the provided USB cable. It is recommended to have a spare battery on hand to ensure uninterrupted operation of your Ring Doorbell.

Understanding Transformers

In order to power the Ring Doorbell, it is important to have a transformer that is compatible with its power requirements. The transformer converts the standard voltage of your home’s electrical system to the low voltage needed by the doorbell.

The recommended transformer for the Ring Doorbell is a 16-24VAC transformer. This voltage range ensures that the doorbell receives enough power to operate effectively. Using a transformer with a higher or lower voltage can lead to performance issues or even damage the doorbell.

If you are unsure about the compatibility of your existing transformer, it is recommended to consult the Ring Doorbell’s official website https://ring.com or contact their customer support for guidance. They can provide you with specific recommendations based on your electrical setup.

Installing the proper transformer is crucial to ensure that your Ring Doorbell functions optimally. It is always better to be safe than sorry when it comes to electrical installations, so don’t hesitate to seek professional assistance if needed.

Choosing a Transformer

When it comes to choosing the right transformer for your Ring Doorbell, there are a few key factors to consider. The voltage, VA rating, and checking the existing transformer are all important aspects that will ensure the proper functioning of your doorbell.


The voltage of the transformer is crucial, as it determines the power supply for your Ring Doorbell. Most Ring Doorbells require a voltage between 16V and 24V. It’s essential to check the voltage requirements specified by the manufacturer for your specific model.

Using a transformer with the wrong voltage can lead to malfunctions or even damage to your device.

VA Rating

The VA (Volt-Ampere) rating of a transformer indicates its power capacity. It determines how much power the transformer can supply to your Ring Doorbell. The higher the VA rating, the more power the transformer can provide.

It’s generally recommended to choose a transformer with a VA rating of at least 16VA to ensure sufficient power supply for your doorbell.

Checking Existing Transformer

If you already have an existing transformer installed, it’s important to check its specifications before purchasing a new one. You can usually find this information on the transformer itself or in the user manual.

Make sure the voltage and VA rating of your existing transformer meet the requirements of your Ring Doorbell. If they don’t, you may need to replace the transformer to ensure proper functionality.

Remember that electrical work should always be done by a qualified professional. If you’re unsure about the compatibility of your transformer or need assistance with installation, it’s best to consult an electrician.

For more information on choosing the right transformer for your Ring Doorbell, you can visit the official Ring website at https://ring.com. They provide detailed specifications and guidelines to help you make an informed decision.

Transformer Installation

Installing a transformer for your Ring Doorbell is a crucial step in ensuring its proper functionality. Here are three methods for transformer installation:

1. Existing Doorbell Wires

If you have an existing doorbell system with functional wiring, you can utilize it to power your Ring Doorbell. The majority of doorbell transformers in homes provide enough power for both the traditional doorbell and the Ring Doorbell.

However, it is essential to check the voltage output of your existing transformer to ensure it meets the requirements of your Ring Doorbell model.

To determine the voltage output of your existing transformer, you can refer to the manufacturer’s specifications or consult with a professional electrician. If your existing transformer meets the voltage requirements, a simple connection to the existing doorbell wires will suffice.

However, if the voltage is insufficient, you may need to replace the transformer with a higher voltage model.

2. Direct to Electrical System

If you do not have an existing doorbell system or if the voltage output of your current transformer is inadequate, you have the option of connecting your Ring Doorbell directly to your electrical system.

This method requires a new transformer installation, which can be done by a qualified electrician.

Connecting your Ring Doorbell directly to the electrical system ensures a stable power source and eliminates any potential voltage issues. It also saves you from relying on an existing doorbell system that may have wiring problems or outdated transformers.

3. Hiring an Electrician

If you are unsure about the installation process or lack the necessary electrical knowledge, it is highly recommended to hire a professional electrician. Installing a transformer requires technical expertise to ensure safety and efficiency.

An electrician will be able to assess your specific requirements, determine the appropriate transformer size, and safely install it for you. They will also ensure that the wiring is properly connected and meets all electrical codes and standards.

To find a qualified electrician in your area, you can consult local directories or search for licensed electricians on reputable websites such as HomeAdvisor.com or Angie’s List. Hiring an electrician may incur additional costs, but it guarantees a professional installation and peace of mind.

Troubleshooting Issues

Low Voltage

If you’re experiencing issues with your Ring Doorbell, such as it not functioning properly or not receiving a consistent power supply, it could be due to low voltage. Low voltage can cause your Ring Doorbell to have weak Wi-Fi connection, slow response times, or even complete shutdowns.

To address this issue, you may need to check the voltage output of your transformer.

According to Ring’s official support website, the recommended voltage range for Ring Doorbell is between 16V-24V AC. If your transformer is outputting a lower voltage, you may need to upgrade to a higher voltage transformer to ensure a stable power supply for your Ring Doorbell.

This can greatly improve its performance and reliability.

Overloaded Transformer

Another common issue that may arise with your Ring Doorbell is an overloaded transformer. An overloaded transformer occurs when the power demands of your Ring Doorbell exceed the capacity of the transformer.

This can lead to a variety of problems, including a constantly blinking or flashing Ring Doorbell, or a complete loss of power.

To address this issue, you may need to assess the power demands of your Ring Doorbell and determine if your current transformer can handle it. If not, it may be necessary to upgrade to a higher capacity transformer.

This will ensure that your Ring Doorbell receives an adequate power supply and functions properly without any interruptions.

Faulty Wiring

If you’ve ruled out low voltage and an overloaded transformer as the cause of your Ring Doorbell issues, it’s possible that faulty wiring may be to blame. Faulty wiring can cause intermittent power supply, inconsistent performance, or even complete failure of your Ring Doorbell.

It is recommended to inspect the wiring connections between your Ring Doorbell and the transformer. Ensure that all connections are secure and free from any damage. If you notice any loose or frayed wires, it’s crucial to rectify them immediately.

In some cases, it may be necessary to call a professional electrician to inspect and repair the wiring if you’re not comfortable doing it yourself.

By addressing these common issues, you can troubleshoot and resolve problems with your Ring Doorbell. Remember to always prioritize safety and consult professional help when necessary. With the right power supply and proper wiring, your Ring Doorbell will provide you with the security and convenience you expect.

Maintaining Your Transformer

Once you have installed a transformer for your Ring Doorbell, it is important to properly maintain it to ensure the smooth functioning of your device. Here are a few key steps you can take to maintain your transformer:


One of the crucial aspects of maintaining your transformer is weatherproofing. Transformers are typically installed outdoors, and they are exposed to various weather conditions. To protect your transformer from moisture, rain, or extreme temperatures, it is recommended to use weatherproofing materials such as silicone sealant or weatherproof covers.

These materials will help to prevent any damage caused by water infiltration and ensure the longevity of your transformer.

Preventing Overheating

Overheating is another common issue that can affect the performance of your transformer. To avoid this problem, it is important to ensure proper ventilation around the transformer. Make sure there is enough space around the transformer for air circulation.

Additionally, avoid placing any objects on or near the transformer that could obstruct airflow. Regularly inspect the transformer to ensure that it is not overheating. If you notice any signs of overheating such as unusual odor, discoloration, or excessive heat, it is recommended to contact a professional electrician for further assistance.

Testing Voltage

Regularly testing the voltage of your transformer is essential to ensure that it is providing the required power to your Ring Doorbell. You can use a multimeter to measure the voltage output. The recommended voltage for Ring Doorbell is typically between 16V and 24V.

If the voltage is below this range, it may affect the performance of your device. In such cases, you may need to consider upgrading your transformer to a higher voltage capacity. It is always a good idea to consult a professional electrician to accurately measure and evaluate the voltage of your transformer.

By following these maintenance tips, you can ensure that your transformer is in good working condition and providing the necessary power to your Ring Doorbell. Remember, proper maintenance can significantly extend the lifespan of your transformer and enhance the performance of your Ring Doorbell.


Installing a properly-sized 16-24 volt transformer with at least 30 VA capacity will allow your Ring doorbell to operate optimally. Correct transformer selection and installation are crucial steps in setting up your Ring device.

With this guide, you now have all the key information needed to choose and install the right transformer for your Ring doorbell.

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