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1.1 KiB
layout, title, description, date, sidebar, comments, sharing, footer, logo, ha_category
| layout | title | description | date | sidebar | comments | sharing | footer | logo | ha_category |
|---|---|---|---|---|---|---|---|---|---|
| component | MQTT sensor | Instructions how to integrate MQTT sensors within Home Assistant. | 2015-05-30 23:21 | true | false | true | true | mqtt.png | Sensor |
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.
To use your MQTT sensor in your installation, add the following to your configuration.yaml file:
# Example configuration.yml entry
sensor:
platform: mqtt
state_topic: "home/bedroom/temperature"
name: "MQTT Sensor"
qos: 0
unit_of_measurement: "°C"
Configuration variables:
- state_topic (Required): The MQTT topic subscribed to receive sensor values.
- name (Optional): The name of the sensor. Default is 'MQTT Sensor'.
- qos (Optional): The maximum QoS level of the state topic. Default is 0.
- unit_of_measurement (Optional): Defines the units of measurement of the sensor, if any.