Description This is a brand new and high quality Black Handle Digital Electronic Code Keyless Keypad Security Entry Door Lock with a solid zinc alloy material construction, durable and corrosion resistant. Provides no key access and provides greater security protection. Easy to install and operate, and with night light, easy to unlock at night. When the door alarms are low, it can be used about 50 times. You can also open the door with an external power supply when there is no electricity. It is more environmentally friendly and safe. It provides a higher level of security for your house and business office. Specifications Material: Zinc alloy Suitable for door thickness: 35~45 mm Weight: 38 lbs Working voltage: DC 6V Working current: ≤20 mA Code capacity: 50 groups Code extent: 4-12 digits Product size: As picture shows Package includes: 1 x Digital electronic code keyless keypad security entry door lock 4 x 5 alkaline batteries