This lock has problems. First, we had to replace the original lock as the installer pinched the internal Bluetooth communication wire so it wouldn't work at all. But Kwikset very good as they sent us a new one at no cost. Second, we live in a cold weather location and the lock sometimes does not work at very low temperatures (does not always recognize the finger touch below -10C). Third, two out of three fobs we have sometimes have to be re-programmed as they stop communicating even though new batteries were installed. Mechanically, the lock is fine but we don't recommend purchasing this lock until the reliability problems are worked out - it's not worth the additional headaches and extra expense.