Disappointing. My second lock has died in 5 years. Just wore out, motor wont turn, started throwing errors, and not locking. Auto-Unlock is sporadic at best, and August keeps saying the same thing. "Something we can't make work in the Android stack."  Reports that its unlocked when its locked. Wifi connection drops constantly even though its 10ft from a wireless access point AND uses Z-wave. August has had plenty of time to get this right, and just can't or won't.