I discovered that the official support of Heltun touch panel switches is not full. When I add Heltun device to Hubitat it creates devices only for relays and sensors, but not for the LED/buttons. Because of that from Hubitat it's possible only to control relays but not the buttons/LEDs. Heltun device can be configured so the button is decoupled from the relay. By doing so you can use the button as a button which sends an event to Hubitat and then Hubitat based on rules triggers some actions. For example, with a decoupled button on the Heltun switch, I can turn on or off a group of different devices such as HUE lamps, relays or whatever else. You can also use the button as a status LED which shows the state of some device or group of devices.
I posted some details in this topic.