The MDS600 digital, standalone door lock from Mul-T-Lock USA, Lodi, N.J., uses one-touch locking and unlocking from the interior and simple digital code keypad entry from the exterior. Its sleek, weather-resistant design is reversible to fit left and right-handed doors, and features backlighting for nighttime operation. The versatile lock provides a great solution for rear entrance and interior door locking needs.

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