Alarm display message

The Alarm display message action shows up to two lines of text on the keypads of an Elk-M1 area. You can control how long the message stays on screen, whether the keypad beeps, and how it is cleared.

This is useful when you want an automation to leave a note on the keypad, for example a reminder, a status message, or a welcome-home greeting.

Targets of the action

This action requires a target. The target is the object of the action. You can point the action at a single entityAn entity represents a sensor, actor, or function in Home Assistant. Entities are used to monitor physical properties or to control other entities. An entity is usually part of a device or a service. [Learn more], a device, an area, a floor, or a label, and Home Assistant will run the action on every matching alarm_control_panel entity behind that target.

  • Entity: one specific alarm_control_panel entity, such as alarm_control_panel.living_room.
  • Device: every alarm_control_panel entity that belongs to a device.
  • Area: every alarm_control_panel entity in a room or area.
  • Floor: every alarm_control_panel entity on a floor.
  • Label: every alarm_control_panel entity that shares a label.

You can also select different target types in one action. For example, you can add a specific entity and an area as targets in the same action to run the action on both of them at once.

Using this action from the user interface

If you prefer building automations and scripts visually, Home Assistant walks you through this action step by step. You pick what to target, tweak a few options, and save. No YAML knowledge required.

To display a message from an automation or a script:

  1. Go to Settings > Automations & scenes.
  2. Open an existing automation or script, or select Create automation > Create new automation.
  3. If you’re setting up a new automation, add a trigger in the When section. Scripts don’t need a trigger. They run when something else calls them.
  4. In the Then do section, select Add action.
  5. From the search box, search for and select Elk-M1 Control: Alarm display message.
  6. Choose the Elk-M1 area, then enter the message text and any options.
  7. Select Save.

Options in the UI

Line 1 (Optional)

Up to 16 characters of text for the first line. Longer text is truncated.

Line 2 (Optional)

Up to 16 characters of text for the second line. Longer text is truncated.

Clear (Optional)

How the message is cleared: 0 clears the message, 1 clears the message with the * key, and 2 displays until timeout.

Beep (Optional)

Whether the keypad beeps when the message is shown.

Timeout (Optional)

How long to display the message, in seconds. Use 0 to display it forever. The maximum is 65535.

Using this action in YAML

If you work directly in YAML, or you want to know exactly what Home Assistant does under the hood, this section has the technical reference. It lists the field names you use in YAML, their types, and which ones are required.

In YAML, refer to this action as elkm1.alarm_display_message. A basic example looks like this:

ActionActions are used in several places in Home Assistant. As part of a script or automation, actions define what is going to happen once a trigger is activated. In scripts, an action is called *sequence*. [Learn more]
action: elkm1.alarm_display_message
target:
  entity_id: alarm_control_panel.home
data:
  line1: "Welcome home"
  line2: "Have a great day"

This shows a two-line message on the area’s keypads until the timeout.

Options in YAML

line1 string

Up to 16 characters of text for the first line. Longer text is truncated.

line2 string

Up to 16 characters of text for the second line. Longer text is truncated.

clear integer

How the message is cleared: 0 clears the message, 1 clears the message with the * key, and 2 displays until timeout.

beep boolean

Whether the keypad beeps when the message is shown.

timeout integer

How long to display the message, in seconds. Use 0 to display it forever. The maximum is 65535.

Try it yourself

Ready to test this? Open Developer tools > Actions, search for this action, fill in the fields, and select Perform action. You see what happens on your actual entitiesAn entity represents a sensor, actor, or function in Home Assistant. Entities are used to monitor physical properties or to control other entities. An entity is usually part of a device or a service. [Learn more] without writing a line of YAML.

Still stuck?

The Home Assistant community is quick to help: join Discord for real-time chat, post on the community forum with the action you’re calling and what you expected to happen, or share on our subreddit /r/homeassistant.

Tip

AI assistants like ChatGPT or Claude can also explain actions or suggest the right one when you describe what you want in plain language.

Related actions

These actions work well alongside this one:

  • Speak phrase: Speaks a predefined phrase on an Elk-M1 panel.

  • Speak word: Speaks a predefined word on an Elk-M1 panel.