Signstek Digital Electronic Touchscreen Keypad Security Entry Door Lock Interchangeable for Left and Right Door Handle with Hidden Mechanical Key (Black)

*Touchscreen Keypad with blue backlight:Touchscreen Keypad has good performance that it avoids the problems caused by unstuck physical buttons; The blue backlight enable you to enter passwords more convenient even in darkness. *Hidden keyhole for emergency: No need to call firemen. Remove the keypad handle with a wrench. Insert the mechanical key. Turn the key clockwise and the electronic door lock opens. *Anti-peep password: Users can create any random digits in front of or behind the correct password (random digits +correct digits+ random digits) so that you do not have to worry about being watched nearby when you input the password. *Interchangeable door handle and Fashion appearance : Comes with the changeable door handle that the door lock can be used on left and right; The door lock is apply to be used in all kinds of the doors with upscale appearance. *Easy installation: Comes a hexagon screwdriver, just follow the user guide to finish the assembling even you are not a professional.