Kaba Auxiliary Lock, Thumbturn; Key Override; 1in Deadbolt for 1-3/4in to 2-1/8in Door Satin Chrome, Simplex, Mfr#: 91026D

Simplex mechanical pushbutton locks offer a convenient way to control access between public and private areas. There are no keys or cards to manage, no computers to program, no batteries to replace, and combinations can be changed in seconds without removing the lock from the door.