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This is a design for door locker,in order to saving the key in hand. With the handle has pressure sensors. When the system start working,circuit board transform the force range to numbers of password and illustrate on the monitor and the same time. By pressing three correct number and turn left the handle to open the door.
ZI MING LI,
ZHANG RU YU,
GUO JIN YU,
TU YI RU,