DATO Smart Lock L-F500 Easy 7-Step Installation 1. Insert the lock cylinder into the opened hole in the door, then secure it with the corresponding screws. 2. Insert the square steel tube on the corresponding part of the front panel. 3. Insert the front panel into the outdoor side of the door, and then pass the square tube through the lock cylinder. 4. Remove the battery cover, then connect the front and back power cables. 5. Insert the rear panel into the rear side of the door while matching its position with the square tube. 6. Tighten the screws on the bottom and within the battery cover of the rear panel. 7. Insert 4 AA batteries, then secure the screw on the battery box. Once you’ve installed the APP, you’re good to go, and can quickly unlock your door in several ways. Package Includes: Mechanical Keys (2), Key Card (2), Square Rod (1), Lock Column (2), Front Panel Lock Body (1), Rear Panel Lock Body (1), Single Lock Tongue Lock (1), Lock Core Clasp Plate (1), Door Plate Screws (4), Rear Panel Screws (4), Battery Cover Screws (2), User Guide (1) Never worry about lost, misplaced, or duplicate keys again. You can choose between fingerprint locking, Bluetooth, passcodes, APP unlock, touch, magnetic card, or IR unlocking to unlock your door in under a second, making it a hassle-free way to revolutionize the way you interact with your home security system. You can also create temporary one-time-use passcodes (eKeys) for neighbors, short-term renters, package deliverers, roommates, dog walkers, or repair services, to grant quickly and securely grant access to your home or room from anywhere. While just four AA batteries will last for a year, you can also use a backup micro-USB charging port for emergencies, so that you’re never accidentally locked out! No need to use Wi-Fi to generate keys, keeping your information safe from hackers or thieves.