The bulb is good, but when the light is turned off, and then after some time the light comes on, the bulb turns on by itself and that's it. It can't connect to Wi-Fi again, you have to delete it from the app and add it again each time, and if automation is installed, that's something else.
Not too happy with this soldering iron. After light to moderate use during a 3 years span, the screw made of metal / plastic which holds the tip secure got bent. Not recommended. The version made for the US market looks better built.