Patent ID: 8138636

Claim:
A plurality of function units for dual wiring system, comprising a first function unit which is adapted in use to be detachably connected to a gate device mounted in a wall surface of a structure, and a second function unit configured to be connected to said gate device via said first function unit, said gate device being connected to both of an electric power line and an information line installed in said structure, wherein the first function unit has a function section, one of a module connector and a module port, which is configured to simultaneously establish both of receiving the electric power from said electric power line, and making a signal transmission between said information line and the first function unit for at least one of outputting an information from said information line and inputting an information to said information line when connected to the other one of said module connector and said module port formed in said gate device, wherein the first function unit further comprises in its lateral face one of an electric power port and an electric power connector, which is detachably connected to the other one of said electric power port and said electric power connector formed in the second function unit to supply the electric power from the first function unit to the second function unit, wherein the first function unit further comprises in its lateral face one of an information signal port and an information signal connector which is spaced from one of said electric power port and said electric power connector at a predetermined interval and detachably connected to the other one of said information signal port and said information signal connector formed in the second function unit to make a signal transmission between the first function unit and the second function unit, wherein said second function unit has a function section, and comprises in its lateral face the other of said electric power port and said electric power connector, wherein said second function unit further comprises in its lateral face the other of said information signal port and an information signal connector which is spaced from said other of said electric power port and said electric power connector at a predetermined interval, and wherein said first function unit and said second function unit are connected with each other in a direction along said wall surface.