PURPOSE: To provide a remote controlling control device capable of confirming easily a setting of an address without opening a main body case of an air conditioner.

CONSTITUTION: A remote controller 3 is provided with an address displaying operation means 1 for outputting a request of address displaying and a signal transmitting means 9 for outputting it to an air conditioner 11. The air conditioner 11 is provided with a signal receiving means 10, an address displaying confirming means 15 for acknowledging a request of address displaying and an operation displaying and address displaying means 17 for displaying an address in accordance with an address set value of the address setting means 16.