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Update component_discovery.markdown (#1155)
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@ -10,10 +10,10 @@ footer: true
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---
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<p class='note warning'>
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This option is only available to built-in components.
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This option is only available for built-in components.
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</p>
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Home Assistant has a discovery service running in the background to discover new devices. Whenever a new device is discovered, an `SERVICE_DISCOVERED` event will be fired with the found service and the information. The `discovery` component has some knowledge about which components handle which type of services and will ensure those are loaded and listening before firing the `SERVICE_DISCOVERED` event.
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Home Assistant has a discovery service running in the background to discover new devices. Whenever a new device is discovered, a `SERVICE_DISCOVERED` event will be fired with the found service and the information. The `discovery` component has some knowledge about which components handle which type of services and will ensure those are loaded and listening before firing the `SERVICE_DISCOVERED` event.
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### {% linkable_title Add discovery instructions %}
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@ -23,7 +23,7 @@ To have your device be discovered, you will have to extend the NetDisco library
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### {% linkable_title Listening to `SERVICE_DISCOVERED` events %}
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From your component, you will have to set up the listening for specific services. Below an example how one would listen for discovered Chromecasts:
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From your component, you will have to set up the listening for specific services. Given below is an example how one would listen for discovered Chromecasts:
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```python
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from homeassistant.loader import get_component
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