COMMUNICATION MODULE, COMMUNICATION SYSTEM AND AIR CONDITIONER

摘要

First and third current paths are connected at mutual one end, and second and fourth current paths are connected at mutual one end. A transmitter sends signals utilizing the change of a current by changing the current flowing between other ends of the first and second current paths. A switching part brings about a non-conductive state between the other end of the third current path and the other end of the fourth current path by being applied with a control signal from a controller. By contrast with this, the switching part brings about a conductive state between the other end of the third current path and the other end of the fourth current path by not being applied the control signal.