Ideal double sided lock for securing perimeter doors with sidelight panels where someone could break the glass and open the door from the inside.  The dual keypad distinguishes the 2210DC from other keyless locks, providing you the ultimate in two-way security.  Beyond home doors, 2210DC double sided locks see widespread use on condo gates, pool gates, parking area gates, play areas, and garden gates.  Lock stays unlocked until you decide to lock it, and you can have the same or different combination codes on each side.  Keyless lock comes with a deadbolt locking mechanism and rotation knob handle which you turn to lock and unlock the bolt.  When ordering with key override, the lock ships keyed on the outside keypad for you.  You may install it with the keyed-in side on the interior.