Fast shipping. By default it is set to work with xiaomi mija app, you have to change it to work with Aqara app with some key pressing sequence. I try to connect it with aqara app for hours, then I found this on the forum: "press 10 times button on the hub, it will factory reset and in a few seconds, you will hear a Chinese voice prompt telling you that hub is being reset. after you hear it press the button twice. you should hear a ding sound and after a while Chinese prompt "bla bla bla aqara app bla bla bla". if you don't hear a ding sound, unplug the hub and plug again. after you hear "bla bla bla mijia app bla bla bla" press the button twice. you may need a few tries to make it work. "
device is dead on arrival and the seller did not support or make a refund