# Automatic Changeover Relay

<figure><img src="https://637306157-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSw1D7IG0PfW6xtqTJPmk%2Fuploads%2Fsx1l9S3lzOn9ex0VN0oa%2Fimage.png?alt=media&#x26;token=0e6dfebb-c145-42cc-92ae-bae23445352a" alt="" width="375"><figcaption><p>Product Photo</p></figcaption></figure>

### **Product Link**

{% embed url="<https://homeautomation.pk/product/automatic-changeover-relay-switch-220v-120a/>" %}

### Wiring Diagram <a href="#wiring-diagram" id="wiring-diagram"></a>

<figure><img src="https://637306157-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSw1D7IG0PfW6xtqTJPmk%2Fuploads%2F2VvFuxAvM7QwqmP4G8Kp%2Fimage.png?alt=media&#x26;token=54581041-c1d7-4ca4-8319-12fe2625d2a4" alt=""><figcaption><p>Wiring Diagram</p></figcaption></figure>

* Supply 100 - 240 volts AC at coil point.
* When there is no voltage at coil points, the NC input supply will go to output and WAPDA will remain disconnected.
* When there is a voltage at coil points, NC will disconnect and the WAPDA input supply will go to output.

{% hint style="info" %}
You may supply coil supply either from UPS or from wifi or a timer device to control the relay.
{% endhint %}