> ## Documentation Index
> Fetch the complete documentation index at: https://bytebeam.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# No Signal Alerts

## What Are No-Signal Alerts?

No-signal alerts are alerts which get triggered when expected data stops arriving from a particular source or stream.

Unlike traditional signal-based alerts, which are based on specific conditions like thresholds or values, no-signal alerts monitor the continuity of data. They are designed to notify you when a data stream that is expected to be active is not receiving any updates, indicating a potential issue with the data flow or source.

## Uses of No-Signal Alerts

The key purpose of no-signal alerts is to monitor the availability and health of data streams in real-time.

These alerts are critical in IoT systems, where continuous data flow is essential for monitoring device performance, user activity, or sensor readings.

When a stream stops unexpectedly, it could signal a malfunction, network issue, or system failure, and immediate action may be required.

## Creating No Signal Alerts

![](https://usercontent.clueso.io/1f4455e0-789e-4beb-8cd9-4dac96bc47e4/11ab834c-dbf9-4e67-ae66-64e087292952/2175255f-5fc9-4c47-8762-e6e8b50af599/images/4bf6a2c8-8ce9-4a8c-988f-d52af51cc9d4.gif)

To create a No Signal Alert in the Bytebeam console:

**1. Access Alert Rules**

Navigate to the **Alerts** tab and click on **Alert Rules**.

**2. Initiate Creation**

Click on the **+ Alert Rule** button and select the **No Signal Alert** option.

**3. Fill Details**

Choose the specific stream and set the duration after which an alert will trigger if no data is received. Then, specify additional parameters such as alert name, criticality, alert group, [activation threshold](https://bytebeam.io/docs/platform-guide/alert-system/alert-rules/activation-and-deactivation-thresholds-in-alerts.md), select the dashboard to link from the dropdown list and click **Submit**.

Your new Alert Rule will appear in the table under the selected **Alert Group** on the **Alert Rules** tab.

\[!NOTE] To activate the alert, click the Start icon next to it.
\[!NOTE] You can stop any active alert by clicking the Stop icon next to it.
<information>Hover over the alert rule name to view its ID and name in the tooltip. Click on the name to copy both to the clipboard.</information>

## Editing No Signal Alerts

![](https://usercontent.clueso.io/1f4455e0-789e-4beb-8cd9-4dac96bc47e4/11ab834c-dbf9-4e67-ae66-64e087292952/2175255f-5fc9-4c47-8762-e6e8b50af599/images/b890033e-2f93-4b2b-aeb3-a084c5ba3a73.gif)

To edit an existing No Signal Alert in the Bytebeam console:

**1. Access Alert Rules**

Navigate to the **Alerts** tab and click on **Alert Rules**.

**2. Initiate Edit**

Find the alert within any **Alert Groups** and click the **Edit** icon next to it.

**3. Modify Details**

Update details such as alert name, alert group, [activation threshold](https://bytebeam.io/docs/platform-guide/alert-system/alert-rules/activation-and-deactivation-thresholds-in-alerts.md), criticality, change the linked dashboard using dropdown list or clear the linked dashboard  and click **Submit**.

> [!NOTE]
>
> If you change the alert group, check the corresponding alert group as the alert will be moved there.

## Deleting No Signal Alerts

![](https://usercontent.clueso.io/1f4455e0-789e-4beb-8cd9-4dac96bc47e4/11ab834c-dbf9-4e67-ae66-64e087292952/2175255f-5fc9-4c47-8762-e6e8b50af599/images/e1cc6e09-ec24-4987-b9db-32c435fd314e.gif)

To delete an existing No Signal Alert in the Bytebeam console:

**1. Access Alert Rules**

Navigate to the **Alerts** tab and click on **Alert Rules**.

**2. Initiate Deletion**

Find the alert within any **Alert Groups** and click the **Delete** icon next to it.

**3. Confirm Deletion**

Enter the correct alert rule name and click **Submit** to delete the alert.

> [!NOTE]
>
> Alert rules cannot be deleted while they are running.

> [!WARNING]
>
> Deleting an alert rule will also delete all the associated notification rules.


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