wait for a while until inuse later on I will comment the performance later
IN and OUT side are not marked on the product as on the online pics what makes it confusing coz all my other devices have bottom IN and top OUT. Took me quite a while to configure the app, manual only in Chinese and the online version is not very clear. QR code impossible to scan. The RED led indicates ON and the green led OFF (hope trafic in China apply other rules) :-) Now finaly i got it working and it does what is told, so end good, all good.