MQTT Cover

The mqtt cover platform enables the possibility to control an MQTT cover. The device state will be updated only after receiving the a new state from state_topic. If these messages are published with RETAIN flag, the MQTT device will receive an instant state update after subscription and will start with correct state. Otherwise, the initial state will be unknown.

There is a state attribute that stores the relative position of the device, where 0 means the device is closed and all other intermediate positions means the device is open.

When a state topic is not available, the cover will work in optimistic mode. In this mode, the cover will immediately change state after every command. Otherwise, the cover will wait for state confirmation from device (message from state_topic).

Optimistic mode can be forced, even if state_topic is available. Try to enable it, if experiencing incorrect cover operation.

To use your MQTT cover in your installation, add the following to your configuration.yaml file:

# Example configuration.yml entry
  - platform: mqtt
    name: "MQTT Cover"
    state_topic: "home-assistant/cover"
    command_topic: "home-assistant/cover/set"

Configuration variables:

  • name (Optional): The name of the sensor. Default is MQTT Cover.
  • state_topic (Optional): The MQTT topic subscribed to receive sensor values.
  • command_topic (Required): The MQTT topic to publish commands to control the rollershutter.
  • payload_open (Optional): The payload that opens the cover. Default is OPEN.
  • payload_close (Optional): The payload that closes the cover. Default is CLOSE.
  • payload_stop (Optional): The payload that stops the rollershutter. default is STOP.
  • state_open (Optional): The payload that represents open state. Default is open.
  • state_closed (Optional): The payload that represents closed state. Default is closed.
  • optimistic (Optional): Flag that defines if switch works in optimistic mode. Default is true if no state topic defined, else false.
  • qos (Optional): The maximum QoS level of the state topic. Default is 0. Will also be used when publishing messages.
  • retain (Optional): If the published message should have the retain flag on or not. Default is false.
  • value_template (Optional): Defines a template to extract a value from the payload.


In this section you find some real life examples of how to use this sensor.

Full configuration

The example below shows a full configuration for a cover.

# Example configuration.yml entry
  - platform: mqtt
    state_topic: "home-assistant/cover"
    command_topic: "home-assistant/cover/set"
    name: "MQTT Cover"
    qos: 0
    retain: true
    payload_open: "OPEN"
    payload_close: "CLOSE"
    payload_stop: "STOP"
    state_open: "OPEN"
    state_closed: "STATE"
    optimistic: false
    value_template: '{{ value.x }}'

For a check you can use the command line tools mosquitto_pub shipped with mosquitto to send MQTT messages. This allows you to operate your cover manually:

$  mosquitto_pub -h -t home-assistant/cover/set -m "CLOSE"