IKEA switches/dimmers are not presented to hassio as entities. Every time you perform any action with these, they are triggering deconz_event on hassio event bus. Lets go to Developer Tools > Events and put deconz_event in the field next to Start Listening. Then press Start listening and do some actions with switches - you will see all the details of triggered event. Crucial information there is “id” that identifies particular controller and “event” that holds information about what action was performed with what button (it is well documented how to decode in official deconz integration documentation). You can find some more information on using IKEA switches/dimmers being discussed here: Problems using Trådfri with deCONZ. This thread also includes few links to other ones, with even more details.