VEVOR Mechanical Keyless Entry Door Lock, 14 Digit Keypad, Outdoor Gate Door Locks Set with Surface-mounted Latch, Water-proof Zinc Alloy, Keypad and Knob, Easy to Install, for Garden, Garage, Yard

Please see the video in the link for reference，the link is valid in 3 days: https://we.tl/t-uYUCMU6PtU.

If you enter the wrong password when unlocking, the door will not open. Press the C key to clear the incorrectly entered password, and then enter the correct password again to open the door. When the password involves all password buttons, if each button is pressed, the door can be opened. But if the password is like 13579, you cannot open it after pressing each password button.

Hello, according to the product manual, the installation range for this combination lock is 35 mm to 65 mm. Since your door is 100 mm thick, it cannot be installed. If this response does not resolve your issue, please contact us again for assistance.

Sorry for the trouble. Please: Check battery polarity (+/-) Clean metal contacts Use new alkaline AA batteries Remove batteries, wait 2 mins, reinstall Try external 9V power (if port exists) If the issue persists, please contact us through the Contact Us page on the official VEVOR website.

It is suitable for this aluminum door.