1、Multiple opening methods: fingerprint + password + key to unlock, very smart and convenient. With 2 emergency keys, you can also open the door in a traditional way. 2、Large Fingerprint Capacity: The fingerprint capacity is very large, which can store 50 fingerprints. Convenient to store fingerprints of family or friends. 3、Super Security: The door lock uses semiconductor and biological characteristics technology to provide you with first‑class security and avoid the same fingerprints. 4、Quick Unlocking: The ergonomic design can identify fingerprints on the door lock, and the lock can be quickly unlocked within 0.25 seconds. It will automatically lock it for you. 5、Simple Installation: No power cords or professionals required. Suitable for most doors using lever door locks, suitable for left and right handles, suitable for door thickness 30‑55mm. Item Type: Smart Door Lock Material: Zinc Alloy Battery: 4 AAA batteries (without battery) Unlocking Method: Fingerprint, password, key Fingerprint Capacity: 50 pieces Password Capacity: 100 groups False Acceptance Rate: <one hundred thousandths (%) Recognition Speed: 0.25 seconds Lock Tongue: Approx. 60mm/2.366in or 70mm/2.76in (manual adjustment) Suitable For Door Thickness: Approx. 30-55mm/1.18-2.17in How to use: 1. Fingerprint unlock Press the fingerprint head, the green light turns on and the verification succeeds with a beep, and the lock is turned on and the light goes out. The verification failed three beeps, and the red light was on at the same time, and then it turned to a steady green light. Please re‑verify the fingerprint if unlocking fails. 2. Password unlock Touch to wake up the password area, the number light is on, the fingerprint light is on and the green light is on, enter the 6‑digit password and press the # key to confirm, the password is correct, and the lock is turned on and the light goes out. When the password is wrong, the fingerprint light will be on three times, and the fingerprint light will be red, and then it will turn to a steady green light. Please re‑enter your fingerprint if unlocking fails. 3. Close the lock After unlocking the lock, execute the lock after 5 seconds 4. Add fingerprint and password (The first 3 users are administrators, and the fourth and above users are ordinary users) (1) Add user for the first time: Touch to wake up the password area, press the 1+# key, the blue light of the fingerprint light flashes, press any fingerprint for a long beep, and the blue light stops flashing and start pressing the fingerprint to be registered 5 times. Each press will have a beep, and the green light flashes at the same time . After 5 times of pressing, there will be a long beeping sound, and the green light will turn on and the light will go out. The recording is successful. (Press 5 times to press 5 different areas of a finger respectively to facilitate unlock recognition) (2)Add a password user for the first time: Touch to wake up the password area, press the "1" + "#" key, the blue light of the fingerprint light flashes, press any fingerprint for a long beep, and the blue light stops flashing at the same time, press the number key to enter the 6-digit password, press the "#" key To confirm, a long "di" sound, the green light is on, enter the 6-digit password again, and press the "#" key to confirm. The passwords entered twice are the same, with a long "di" sound, the green light turns on and then goes out. The entry was successful. If there are three beeps of "di", "di" and "di", and the red light turns on and then goes out, it means that the two passwords are not the same, and the entry has failed. Please enter again. (3) Add user for the second time: Touch to wake up the password area, press "1" + "#" key, the fingerprint light blue light flashes, verify the administrator fingerprint or password that has been entered, a long beep, and the blue light stops flashing at the same time, follow step 1 or 2 to enter the fingerprint Or password user. 1 x Inner Door Handle 1 x Outer Door Handle 1 x Lock Tongue 1 x Gusset 1 x Buckle Box 2 x Key 7 x Screw 4 x Nut Tube 1 x Square Bar 1 x Screwdriver 1 x Manual