Digital Door Lock Keyless Keypad Door Coded Lock Door Lock Smart Digital Room Lock Combination Door Lock Features: Privacy Password Input & Safe Design: enable to unlock the door even when you adding any numbers before/after the correct password. and the smart keyboard is designed with traceless keys, thus prevent the password known by others. User Management Capacity: the electronic lock is capable of storing up 10 access codes, 1 manager password + 1 passage password + 8 user passwords. Low Power Consumption: the inner battery compartment and the backup battery pack are both powered by 4pcs 1.5V AAA batteries (NOT included), and with less than 20μA static current, they can last more than one year, and it will make a continuous beep sounds to remind you when in low voltage. Backlight 12-key Keypad: low brightness backlit keyboard makes it easy and convenient e at night. Reliable Quality: fine casting, modern appearance, waterproof seals protecting electronic components. Simple & Easy Installation: adopts with standard single spring bolt and equipped with installation accessories and instructions, quick to install the digital door lock. Fit for Various Doors with thickness between 35mm-60mm. Voice Prompt: with voice prompt function, the design is more humanized. Reset Function: press and hold the reset button for five seconds and the master code with return to the manufacturer default code "0123". Wide Application: great for home, office, hotel, apartment, restaurant, dormitory, etc. Specifications: Color: Black / Silver (Optional) Material: Zinc alloy Power Supply: 4 * AAA 1.5V battery (NOT Included) Static Current: ≤20μA Static Withstand Voltage: ≥15KV Door Thickness: 35-65mm Lock Bar Distance: 60-70mm Lock Bar Thickness: 20mm Item Weight: 1050g / 2.31lb Item Size: 185 * 110 * 80mm / 7.28 * 4.33 * 3.15in Package Size: 22.2 * 14 * 9.5cm / 8.74 * 5.51 * 3.74in Package Weight: 1221g / 2.69lb Package List: 1 * Lock 1 * Battery Compartment 1 * Pack of Installation Accessories 1 * Template 1 * User Manual (English)