How to install Dahua intelligent lock spring

Installation method of Dahua intelligent lock spring. Put the spring into the handle hole, align the handle square hole of the front panel with the front lever, then install the rear bottom plate from the inside of the door, and fix the rear bottom plate and the front panel on the door with screws. Then put the rear lever into the square hole of the lock body from the inside of the door, put the spring into the handle hole of the rear panel, and insert the connecting wire of the rear panel and the common wire of the front panel. Insert the extra wires into the door hole, then put the front panel into the rear bar and install it on the door, and lock it with screws. Then install 4 No.5 alkaline batteries to test the installation and function of the lock.