Installation was a breeze... took me only 20 minutes and that was double-checking at every step!
A good solution for a pair of old folks who can't hear the doorbell consistently and are planning for that inevitable day when neither can either hear NOR GET UP OF THE FLOOR to answer the front door personally-- pretty smart for nonagenarians!! Now they can provide a help-provider with advance access through the door on a one-time or semi-permanent basis. We loaded up the Lock with 4 codes and one one-time code right away and all's well.
The only thing that doesn't work is the post-entry time-lock whereby one can have the door auto-lock itself XX seconds after entry....
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