Abstract: A digital door lock assembly which includes an exterior assembly is disclosed. The exterior assembly includes a PCB which includes an RF chip for receiving and processing an RF signal, a controller chip for receiving and processing signals output from number keypads, and a regulator supplying an operating voltage to the RF chip and the controller chip, wires which are connected to the RF chip, the controller chip, and the regulator through the PCB, and a housing which has a storage space into which a key lock cylinder including a spindle and first screw holes is inserted, and includes a first hole and second holes that are formed at a bottom of the storage space SS and through which the spindle passes.