Enson Loo wrote do you use metal enclosure for the bulb? how about firmware upgrade? http://static.tp-link.com/iotUpgradeTool_V1.0.zip When I looked, the bulb was using the latest firmware. No metal...

To your first question, you do not have to have the app running to do this. To the second question, I've never tried this with Alexa.

Model : Hardware Version : Firmware Version : ISP : I have four of these smart bulbs that I bought from Amazon almost 5 months ago, and suddenly one of them turned very dim today. It functions...