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* e.g. to e.g., and proper case for Home Assistant * Instructions how to -> Instructions on how to
43 lines
1.0 KiB
Markdown
43 lines
1.0 KiB
Markdown
---
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layout: page
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title: "MQTT Device Tracker"
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description: "Instructions on how to use MQTT to track devices in Home Assistant."
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date: 2015-09-19 20:41
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sidebar: true
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comments: false
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sharing: true
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footer: true
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logo: mqtt.png
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ha_category: Presence Detection
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ha_iot_class: depends
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---
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The `mqtt` device tracker platform allows you to detect presence by monitoring an MQTT topic for new locations. To use this platform, you specify a unique topic for each device.
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To use this device tracker in your installation, add the following to your `configuration.yaml` file:
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```yaml
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# Example configuration.yaml entry
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device_tracker:
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- platform: mqtt
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devices:
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paulus_oneplus: 'location/paulus'
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annetherese_n4: 'location/annetherese'
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```
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Configuration variables:
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- **devices** (*Required*): List of devices with their topic.
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- **qos** (*Optional*): The QoS level of the topic.
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Example JSON you can publish to the topic (e.g., via mqtt.publish service):
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```json
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{
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"topic": "/location/paulus",
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"payload": "home"
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}
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```
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