TRANSMISSION CONTROL METHOD

摘要

PURPOSE:To improve the correspondence to a change in equipment or extension by using a part of function of each control terminal in common, and providing externally the result. CONSTITUTION:A repeater 31 to receive a signal from a connection detecting module 26 is connected to a lighting distribution line 21. A signal between the connection detecting module 26 and a control terminal 30 is transmitted and received by transmitting a signal to the control terminal 30 newly from the repeater 31 is transmitted/received similarly with the signal of other control modules 27-29 to miniaturize the connection detecting module 26 itself and also a reception section exclusive for the connection detecting module 26 is not required in the control terminal 30, and the extension or replacement of devices and control terminals is coped with by having only to connect the repeater 31 to a lighting distribution line 21.