IN THE CASE WHERE SELECTION OF AN ICON (30101) REPRESENTING AN AIR CONDITIONER IS SENSED IN A REGION CORRESPONDING TO A CERTAIN ROOM ON A FLOOR PLAN (500), A REGION CORRESPONDING TO THE CERTAIN ROOM ON THE FLOOR PLAN (500) IS SWITCHED TO AN ADJUSTMENT REGION (31401) FOR CHANGING THE SET TEMPERATURE OF THE AIR CONDITIONER. IN THE CASE WHERE IT IS SENSED THAT A CONTACT MADE TO A TOUCH-PANEL DISPLAY (101) MOVES WITHIN THE REGION CORRESPONDING TO THE CERTAIN ROOM, A CONTROL COMMAND FOR CHANGING THE SET TEMPERATURE OF THE AIR CONDITIONER IN ACCORDANCE WITH A DISTANCE IN WHICH THE CONTACT MOVES IS TRANSMITTED TO THE NETWORK.