Excerpt: The only problem is the magnet or base. This base will stick to any metal corner bead, door frames. The problem is when the laser is on the ceiling bracket any beating on the wall will make the laser slide down the bracket. It would help if the laser had a lock on the bracket so it wouldn't slide when putting in fence staples or using a impact to put screws in molding or hammering hard nails.
Summary: I haven't used it much, but this laser level is the coolest device. It's published accuracy is better than the competition in this price range,. It is super simple to set up, and stores safely in the handy carry case. I am pleased with DeWalt on this one.