The wifi, as mentioned, is inadequate, to the point of being annoying. I have not been able to group more than one lock within the smartlife app, so each lock requires separate settings. Otherwise... good, considering that 1 out of 10 locks I have has broken. It's a shame, it could dominate the market if it had at least better wifi. New versions are already coming out.

The wifi is insufficient within 2 meters from 2 access points and it has very low performance -77db at 5 meters and almost zero -89db above.
The management of users and codes is also inadequate. It should be done in a specific way so that the codes are not left registered, otherwise all codes should be deleted from the keyboard... a waste of time and money.
Get something better.