If you want to control scene, say 'OK Google,start test'.Notice:test is the name of the scene which you create via Geeklink APP. If you want to turn on light, say 'OK Google,turn on office'.Notice:'office' is the name of the light which you create via Geeklink APP. If you want to turn off light, say 'OK Google,turn off office'.Notice:'office' is the name of the light which you create via Geeklink APP.