Put paramset

Use this action to manually change a device’s paramset, even devices without built-in support in Home Assistant. It gives you direct access to the putParamset method of the connection, which is useful for changing settings such as the week program of a wall thermostat.

For BidCoS-RF devices, the RX mode controls how the configuration data is sent to the device:

• BURST is the default. It wakes up every device when sending the configuration data, which uses some battery on all of them, but the data is sent almost immediately.
• WAKEUP sends the configuration data only after a device reports updated values, which usually happens every three minutes. It does not wake up every device, so it saves battery.

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 change a paramset 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 Homematic: Put paramset.
6. Enter the Interface, Address, Paramset key, and Paramset and, optionally, an RX mode.
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 homematic.put_paramset:

action: homematic.put_paramset
data:
  interface: wireless
  address: "LEQ1234567"
  paramset_key: MASTER
  paramset:
    WEEK_PROGRAM_POINTER: 1

To set the week program with an explicit receive mode, for BidCoS-RF only:

action: homematic.put_paramset
data:
  interface: wireless
  address: "LEQ1234567"
  paramset_key: MASTER
  rx_mode: WAKEUP
  paramset:
    WEEK_PROGRAM_POINTER: 1

Options in YAML

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.

Related actions

These actions work well alongside this one:

• Set device value: Controls a Homematic device manually using its setValue method.

• Virtual key: Simulates a keypress on a Homematic device or virtual remote.

• Set variable value: Sets the value of a Homematic system variable.

• Reconnect: Reconnects to all Homematic hubs.

• Set install mode: Sets a Homematic XML-RPC interface into installation mode.