The schematic of the Jetta alarm system in 1994 is shown in the figure.
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A two-dimensional line scanner, comprising a scanner body and a bracket, characterized in that: the scanner body is composed of a handle, an upper cover and a rear cover respectively fixed at the front and rear ends of the handle, and the front side of the handle is The interior is provided with a light-transmitting part, a light-guiding part, a main board, and a key board. The light-guiding part is also provided with a dust-proof mirror frame embedded with a dust-proof lens at the bottom. The main board is plugged and fixed with copper on one side. A two-dimensional decoding board is installed and fixed on the copper column, and a two-dimensional code component is connected below the two-dimensional decoding board. On the button position, the rear side of the handle is internally provided with a wire clip assembly formed by the upper half of the wire clip and the lower half of the wire clip. The wire clip assembly is placed on the corresponding square groove inside the back cover, and the wire The wire on the clip assembly extends to be connected with the main board, the bracket is composed of a bracket rod, a bracket head and a bracket base respectively fixed on the top and bottom of the bracket rod, and the bracket rod is composed of a left bracket rod and a right bracket rod. The center of the bracket base is provided with a circular groove which is convenient for the bracket rod to be inserted and connected, and the scanner body is hung on the bracket head through the handle.
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