Electronic Cabinet Lock Professional Smart Safety Combination Password Drawer Lock for Doors Drawer Wardrobe Cabinet Item Type: Electronic Cabinet Lock Material: ABS, Zinc Alloy Weight: Approx. 180g/6.3oz Size: Approx. 10.5x5.3x1.4cm / 4.1x2.1x0.6in Use: Fingerprint Drawer Lock, Wardrobe Lock, Cabinet Lock Batteries: Dry Cell x 4, AAA (Shipped Without Batteries) Password Setting: 1. 100 passwords can be registered for the Smart Lock. 2. Press the reset hole once with the registration pin, the blue lighting will be on for 3 seconds, and you will start to set the password, you need to input the 4‑8 digit password twice and press the lock key to confirm respectively, the blue lighting blinks to indicate that the setup is successful, and the red lighting blinks to indicate that the registration has failed. Re register, repeat the above operation. 3. Please repeat the 2nd step for the second password registration. 4. Press and hold the reset hole of the registration pin for more than 5 seconds, if the blue lighting blinks 5 times, it means all cards and passwords have been cleared. How to unlock the action: 1. Swipe the card recognition area, see the blue lighting on and feel the vibration and sound prompts, swipe the card recognition is successful, you can unlock the door, the battery is not battery. 2. a: When the battery voltage is low, a continuous drop sound will indicate that the voltage is too low when unlocking the battery. b: When the battery voltage of the lock body is insufficient, the external power supply can be used to open the emergency door.