What Is a Wired Doorbell Transformer?

A doorbell transformer is an electrical device that connects to your home circuit and transforms or steps down the power to a lower voltage and amperage that a wired doorbell can handle. In most cases, this is 16VA.

Where are Wired Doorbell Transformers Located?

Doorbell transformers are typically mounted near the main electrical panel for easy access. In some cases, it is located in the garage, the attic, or even co-located near the wired doorbell.

Choosing the Right Transformer for Your Doorbell

Most simple wired doorbells need a 16V, 10VA doorbell transformer. A basic door chime creates a "ding-dong" sound with a plunger striking a plate inside the chime unit. Some chime systems may require higher voltage or amperage.

Size of the Transformer

When referring to size, we are talking about the VA, or volt-amperage of the doorbell. A larger transformer can power multiple doorbells or chimes, while a smaller one may only be able to power one.

Distance from the Doorbell to the Transformer

Wire gauge plays an important part here, but if the distance is over 50 ft., we recommend increasing the VA of the transformer.

Voltage of the Transformer

Most doorbell transformers have a voltage of 16 volts, but some may have a higher or lower voltage. All the doorbells we market on 1800doorbell are 16V.

Amperage of the Transformer

This is the amount of current that the transformer can supply to the doorbell. A higher voltage will cause the chime to be a little louder, but if the voltage is too high, it will make the mechanical parts inside the doorbell, like the plunger, strike harder than it was designed to do.