Low voltage alarm function: There will be an alarm “Low power , Please change the batteries”upon unlock the door when the voltage is below 4.8V.After that, the lock can be unlock 200 times.
Double User Verification Functions :In the Double User Mode, only two different user are allowed to unlock the door. Admin code except.
Admin User can set a new Admin code by revision. After the revision, the new Admin will replace the old one.
This lock has anti-peeking function, with which users can input innocent number before or after the password, e.g. XXX+ password+ XXX. (no more than 20 digits.)