I bought the Smartcode 913 and it took me almost a year to install and when I finally tried, it wouldn't light up. I finally diagnosed that the tab in the battery pack was missing so no way for the lock to be energized. Luckily I was under the year warranty and received a new lock. Once I installed this lock, the automatic locking feature would not work so basically I have $150 mechanical deadbolt installed. Seems strange to receive to defective products. [This review was collected as part of a promotion.]