This Zinc alloy door lock is strong and secure. It can be used as a front door lock and doesnt require keys. The lock comes with 2 wristbands and 5 cards for keyless entry. It also allows you to set a code just in case you don't have any of the entry methods. Great gift for people who walk out of the house with no keys all the time. New homeowners LOVE this item.
Door thickness:: 38-55mm, if over 50mm, please let us know.
Power source:: 4x AA batteries(not included)