Simplex 7104 SC Lock

no batteries required, easy to install, easy to program my code, I now have this lock on every exterior door and on my fence gates. The description was not clear, and I ordered two of these with dead bolts (I wanted an auto lock) -- my mistake, so I set them aside in case I ever have need of a deadbolt lock. Sure is nice to be able to enter without having to lug around a set of keys, or wonder if the batteries will go tango uniform and leave me locked out.

These do work correctly if it's installed correctly. If you jam the bolt because of shotty work and shortcuts it won't work right.Make sure the door is aligned and the bolt can move freely. If it rubs in the jamb you need to correct that as you would with every other lock.Good stuff, I'd recommend :-)