The ZEN04 Smart Plug is fully integrated with Home Assistant, so you should have access to all of the advanced settings for the device.

The ZEN04 Smart Plug is officially integrated with the new ZWaveJS integration of Home Assistant, so you will have access to the advanced settings out of the box. If you aren't on the JS integration yet, Home Assistant currently recommends handling Z-Wave devices through the JS integration since all others have essentially been abandoned and / or discontinued and so that the ZEN04 can be recognized correctly.

If you don't see a certain setting, there is another way to make changes:

You can now change any parameter manually on the JS Z-Wave integration for Home Assistant. 

It needs to be done in zwavejs2mqtt and it’s not possible to do this within HA directly at the moment:

1. Under node, scroll down below any exposed settings for the device (under Configuration) to the Custom Configuration section as shown in the screenshot here, where you'll see Value, Parameter and Size.
2. You can enter the data according to the product documentation and click SET for the parameter to be updated.

Let us know if you have any other questions! We're here to help!