You can use this skill to test alexa control smart home device, here's a step by step guide: 1. Search the Alexa Skills directory for "Just Smart" 2. Click Enable skill of "Just Smart", then input test account username,password and region on the linking page; 3. Talk to Echo "Alexa,discover devices",Wait till Echo says "Discover is completed"; 4. Now all setup is done ,Try talk to Echo to control your device. 5. You can talk Echo:Alexa,turn on switch、Alexa,turn off switch.