> For the complete documentation index, see [llms.txt](https://help.verkada.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.verkada.com/intercom/configuration/wire-a-doorbell-chime-to-an-intercom.md).

# Wire a Doorbell Chime to an Intercom

Wire a traditional doorbell chime and transformers to your Verkada intercom

Verkada Intercoms includes an output relay that you can use to trigger a doorbell/chime.

### Requirements

* 1 or more door bell chimes
* 1 doorbell transformer
* Bell wire

***

## Configure a Chime output

{% stepper %}
{% step %}
**In Verkada Command, go to All Products > Intercom.**
{% endstep %}

{% step %}
**Select your intercom and click Settings.**
{% endstep %}

{% step %}
**Under I/O > Output, select Chime. The Intercom’s relay will change state and a third-party chime can be powered.**
{% endstep %}
{% endstepper %}

### Wire your Intercom

{% stepper %}
{% step %}
**Remove the terminal block or pigtail from the rear of your Intercom.**
{% endstep %}

{% step %}
**Wire the COM output on the terminal block to one of the terminal screws on the doorbell transformer.**
{% endstep %}

{% step %}
**For each doorbell, wire the Front and Trans terminals to the NO terminal on the intercom and the remaining terminal on the doorbell transformer, respectively, as shown.**
{% endstep %}

{% step %}
**Reinsert the terminal block.**
{% endstep %}
{% endstepper %}

***

{% hint style="warning" %}
If you have multiple doorbells, wire them in parallel.
{% endhint %}

#### TD33 Pigtail Wiring

<div align="left" data-with-frame="true"><img src="https://3022285914-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTH6kITd3Fb5UOnnsfQ9r%2Fuploads%2Fgit-blob-9faab6125c15094c2f4b7ff5408f022c58ec2691%2F6d3e614b39f9906a94f7e10ea432542e9e2dea1c.png?alt=media" alt=""></div>

#### TD52/53/63 Terminal Block Wiring

<div align="left" data-with-frame="true"><img src="https://3022285914-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTH6kITd3Fb5UOnnsfQ9r%2Fuploads%2Fgit-blob-17927d1f7352919b1d00777ea68f72f85a77043b%2F659cdb1c10a72f7a2ca03b06fb6080ce6e1e4c44.png?alt=media" alt=""></div>


---

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