6+ hours of wasted time, between purchasing, installing, trouble shooting, exchanging for a new one, installing new one, trouble shooting, and then returning the second one.  The device installs easily and initial set up was a breeze.  The deadbolt worked each time after initial installation and setup.  The first one lasted about 12 hours before error codes.  The second one worked for 24 hours, and then would not lock with the keypad.

Don't waste "your" time!!!