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Fabian Affolter 2015-10-21 19:39:31 +02:00
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source/components/sensor.mqtt.markdown
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@ -10,10 +10,9 @@ footer: true
--- ---
<img src='/images/supported_brands/mqtt.png' class='brand pull-right' /> <img src='/images/supported_brands/mqtt.png' class='brand pull-right' />
This generic sensor implementation uses the MQTT message payload This MQTT sensor implementation uses the MQTT message payload as the sensor value. If messages in this state_topic are published with *RETAIN* flag, the sensor will receive an instant update with last known value. Otherwise, the initial state will be undefined.
as the sensor value. If messages in this state_topic are published
with RETAIN flag, the sensor will receive an instant update with To use your MQTT sensor in your installation, add the following to your `configuration.yaml` file:
last known value. Otherwise, the initial state will be undefined.
```yaml ```yaml
# Example configuration.yml entry # Example configuration.yml entry