# Air Quality Sensor Zones
Verkada [sensor zones](https://www.verkada.com/blog/adding-more-control-to-environmental-monitoring-with-audio-alert-and-device/) allow you to treat a collection of sensors as a single group or a virtual sensor. Sensor zones are designed to ensure that a single trigger source (for example, a student vaping) does not create duplicate alerts across multiple devices within the same area.
Alerts from zones are similar to alerts from individual sensors, except they also include the zone name in the alert, followed by the name of the first sensor to trigger the alert.
To use a zone effectively, you should have at least 2 devices selected. If you’re looking to set up alerts on a per-device level, we recommend using the [device-level alerts](https://help.verkada.com/air-quality/events-and-alerts/configure-air-quality-event-alerts) instead of zone functionality.
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An ongoing alert prevents the dispatch of additional alerts from any other devices in the zone for that specific sensor reading until the zone event has been resolved for at least 10 minutes.
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## Before you begin
We recommend reviewing these guidelines before you create a sensor zone:
* All sensors in the zone must be in the same site or the same subsite.
* You can have as many zones per site as you want, with any number of sensors.
* Zones are treated differently than subsites.
* Sensors do not have to be at the same physical location; however, a sensor can only be a part of one zone. We recommend that sensors in a zone be in the same room or space.
## Sensor zones
### Create a zone
Once you create a zone you will see the sensors appear in a box with the zone label at the top left. Sensors not in a zone appear as normal.
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**In Verkada Command, go to All Products > Air Quality.**
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**On the right, click Sensor Zone (above any site or subsite) to start your configuration.**
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**On Create Sensors Zone:**
a. Give the zone a unique **Name**.\
b. Add devices from your site into that zone. You can only group devices from the same site into a zone.\
c. Click **Apply** to create the zone.
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### Edit a zone
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You can still configure sensor event triggers at the device level. If you change a sensor trigger on the device level it will override what was configured for the zone. When you go to edit the zone, you will see **Mixed** for that trigger value.
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**In Verkada Command, go to All Products > Air Quality.**
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**Find a zone under the Summary section.**
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**At the top right of the zone click Edit to edit the following options:**
a. Zone name.\
b. Selected sensors.\
c. Notifications.\
d. Delete the zone.
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### Mute sensor zone
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**In Verkada Command, go to All Products > Air Quality.**
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**Find a zone under the Summary section.**
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**At the top right of the zone click Edit.**
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**Scroll down to Notifications and click next to the alert you want to mute.**
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**Click Mute Alert:**
a. Choose the duration for the alert to mute: **1 day, 1 week, Always, or Custom.**\
b. If you choose **Custom**, set the duration, and click **Mute**.
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### Delete sensor zone
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**In Verkada Command, go to All Products > Air Quality.**
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**Find a zone under the Summary section.**
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**At the top right of the zone click Edit.**
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**Scroll down to Notifications and click next to the alert you want to delete.**
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**Click Delete Alert then Yes to confirm.**
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## Sensor zone alerts
### Create zone alerts
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**In Verkada Command, go to All Products > Air Quality.**
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**Find a zone under the Summary section.**
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**At the top right of the zone click Edit.**
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**Scroll down to Notifications and click Create Alert.**
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**Continue with configuration on the Create Alert modal. See** [**Sensor Alerts and Events > Create Alert**](https://help.verkada.com/air-quality/events-and-alerts/configure-air-quality-event-alerts)**.**
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### View zone alerts
{% stepper %}
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**In Verkada Command, go to All Products > Air Quality.**
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**Find a zone under the Summary section.**
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**At the top right, click Zone Alerts.**
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**You are automatically redirected to the Alerts page with alerts filtered to your selected zone.**
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### Edit sensor zone alerts
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**In Verkada Command, go to All Products > Air Quality.**
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**Find a zone under the Summary section.**
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**At the top right of the zone click Edit.**
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**Scroll down to Notifications and click next to the alert you want to edit.**
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**Click Edit Alert:**
* Continue with configuration on the **Create Alert** modal. See [Sensor Alerts and Events > Create Alert](https://help.verkada.com/air-quality/events-and-alerts/configure-air-quality-event-alerts).
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