Click here and find the device. 
Then click on it. You will see the entities that were created. Some may be hidden and you can enable them if you need them. Then you know the device name you are looking for when doing the automation. You can copy the entity name or just look it up again in the automation editor when you set up the thing you want to do.
You may want to look at this as well, it might be easier for you.
📳 Appliance Notifications & Actions - Washing Machine - Clothes Dryer - Dish Washer - ETC.