> For the complete documentation index, see [llms.txt](https://docs.buildings.ability.abb/collection/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.buildings.ability.abb/collection/platform/alarms-rules-and-escalations/rule-chains/nodes/rule.md).

# Rule

<div align="left"><figure><img src="/files/Uht1OUGLVB4I6yj7npfe" alt="" width="375"><figcaption></figcaption></figure></div>

Use **Rule** to react to a selected asset rule.

This node emits an output when the selected rule is triggered.

<div align="left"><figure><img src="/files/gsLbUEUlZEMKvE034CU2" alt="" width="267"><figcaption></figcaption></figure></div>

### What it does

The node listens to a rule on a selected asset.

Use it to start a rule chain path from a rule event.

### Outputs

* **Triggered** — Fires when the selected rule is triggered.

### Configurable settings

<div align="left"><figure><img src="/files/dhszAw87SOTYLVwuNDYT" alt="" width="375"><figcaption></figcaption></figure></div>

* **Asset** — Select the asset.
* **Rule** — Select the rule on that asset.

### Typical use

Use **Rule** as an event source for notifications or follow-up actions.

### Related documentation

* [Rules](/collection/platform/alarms-rules-and-escalations/rules.md)
* [Create a Rule](/collection/platform/alarms-rules-and-escalations/rules/create-a-rule.md)
* [Nodes](/collection/platform/alarms-rules-and-escalations/rule-chains/nodes.md)

For the full editor flow, see [Configure Rule Chain](/collection/platform/alarms-rules-and-escalations/rule-chains/configure-rule-chain.md).


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