Send

Use this action to send a raw event over the radio, for example to simulate a button press or control a device that is not automatically added in Home Assistant.

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 send a raw event 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. Search for and select RFXCOM RFXtrx: Send.
6. Enter the Event as a hexadecimal string.
7. Select Save.

This action does not support targets. In the UI, you are not prompted to choose an area, device, entity, or label.

Options in the UI

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 rfxtrx.send:

action: rfxtrx.send
data:
  event: "0b1111e003af16aa10000060"

This simulates a button being pressed by sending the raw event over the radio.

Options in YAML

Good to know

• To generate event codes for switches and lights, see Generate codes on the RFXCOM RFXtrx integration page.

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.

More examples

Real scenarios where this action shows up in automations and scripts. Copy any example and adapt it to your setup.

Automation: control a device that is not added to Home Assistant

Send a raw event to switch on a device that Home Assistant does not control directly, for example an older remote-controlled outlet, when the sun goes down.

• Trigger: Sun: Sunset
• Action: RFXCOM RFXtrx: Send
  • Event: 0b1111e003af16aa10000060

- alias: "Switch on the porch light at sunset"
  triggers:
    - trigger: sun
      event: sunset
  actions:
    - action: rfxtrx.send
      data:
        event: "0b1111e003af16aa10000060"

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.