New to smartTHings. Newb question. I want to control my multi-media equipment with an IP2IR iTach device. I can send the “sendHubAction” command with the proper code inside a Device Handler in simulate mode (IDE which works) however i guess i am not sure of the overall architecture here. My intent is to use an Amazon Echo with voice command for on an off capabilities. Do i need a smartapp? Can I use just a virtual switch and then use the same action in the Device Handler? It does not appear to work. It seems I must have a device in order for the Echo to see it. Any advice or comments would be appreciated.