Left Handed Mechanical Keyless Lever Door Lock Digital Code Entry Security Safety,waterproof Mechanical Keyless door lock-Not Deadbolt Need to drill additional 4 holes only for single bore door

There are few directions for installation, but once you figure it out, its not too much of a problem.Like most mechanical locks, pressing the right buttons in any order will release the lock, and I'm not too keen on that.But overall its a decent lock. For the money, its a great lock.

Easy to install and works very well on our linen closet.

I like the look, the feel. As for installation, the most difficult part is to drill the holes at the correct position. My door was installed by the builder long time ago. They did not do a good job, so when I install the handle, the position was slightly off. That caused the four holes I drilled don't align very well with the screws on the front cover. Damn! I have to open up the holes. Other than that, every thing is fine. No problems at all.