2. Take out the installation cardboard, fold the cardboard along the dotted line and put the cardboard in the position where it needs to be locked, then mark the place where it needs to be punched and punch it.
3. After the iron plate is fixed, insert the hexagon socket head screw into the iron plate, put the rubber tile between the two metal tile pieces, then put it on the hexagon socket head screw, insert the iron plate into the three holes punched in the door, and insert the mushroom head from the other side of the door at the same time, lock the iron plate on the door with an hexagon wrench, fix the side plate on the previously punched door frame with two semicircular head screws, and correct the position of the side plate to make the position of the side plate and the iron plate appropriate. Fix the lock body and the side plate and lock all countersunk screws, then remove the countersunk screws, drill holes and wire at appropriate positions, and finally lock the lock body on the side plate with an Allen wrench.
4. Connect the wires according to the instructions in the manual.
5. Cover the cover plate and insert the small aluminum cylinder into the screw hole of the lock body.