Hidden Doorlock / DoorLock

This product is a door lock for the visually impaired , at the same time , the general public can also be used. Password button is safe from the outside than the conventional door lock on the inside of the handle. Inner Button has become a braille , by lightly touching the outer handle to push the password , nine points is illuminated at the position of the button , it is possible to press the password button on the inside.