... quality. Main products include:Hotel card lock,Fingerprint lock,Digital code lock,Cabinet lock,doorbell system,energy saving switch, ... use as pictrues below: Password door locks Technical : By TM Card, digital Keypad/Code, Mechanical key to open the door. ... ²Material of: Zinc alloy.²Low voltage alarm, stable quality. ²Professional manufacturer in China, OEM design avaiable. Password door locks packing ...