Kevo has been installed at three rental properties. The Bluetooth features are very easy to use, and have saved me a lot on rekeying locks once a tenant leaves. The ANSI Grade 2 is quite impressive too as well is the fact Kevo using military grade encryption to communicate with my phone. Although it is not cheap - it is certainly a great lock for rental units to people who just want a higher grade of security combined with convenience. Best to everyone here, Darren Chaker [This review was collected as part of a promotion.]