A setting value change device (50, 500) that performs change processing to change a temperature setting value of a refrigeration apparatus and/or a heating apparatus (10a, 10b), the setting value change device comprising: a display configured to display the temperature setting value; a touch sensor configured to detect a touch operation on the display; and a controller connected to the display and the touch sensor; the controller configured to perform change processing to cause the display to display a drag button and a movement path on which the drag button moves, provide, on the touch sensor, a drag area that detects a drag input on the drag button and a reference point disposed at a location off the movement path, set the drag area larger than a display range of the movement path, move the drag button to a crossing point where a straight line or a specific curve connecting the reference point to a drag operation position in the drag area crosses the movement path, and change the temperature setting value to a value corresponding to a position of the drag button; wherein the controller sets a cancel area such that when the cancel area is touched at a time of the drag operation of the drag button, the change processing of the temperature setting value is ended, and the controller configured to: cause the display to display the movement path as a non-linear shape, associate a value from when a position of the drag button is at a one end of the movement path with a lower limit value of the temperature setting value, associate a value from when the position of the drag button is at the other end of the movement path with an upper limit value of the temperature setting value, and set the cancel area to a range connecting a periphery of the one end of the movement path to a periphery of the other end of the movement path; wherein the controller is further configured to cause the display to display the movement path as a circular arc shape or an elliptical arc shape; and disposes the cancel area at a position surrounded by the movement path. a display configured to display the temperature setting value; a touch sensor configured to detect a touch operation on the display; and a controller connected to the display and the touch sensor; the controller configured to perform change processing to cause the display to display a drag button and a movement path on which the drag button moves, provide, on the touch sensor, a drag area that detects a drag input on the drag button and a reference point disposed at a location off the movement path, set the drag area larger than a display range of the movement path, move the drag button to a crossing point where a straight line or a specific curve connecting the reference point to a drag operation position in the drag area crosses the movement path, and change the temperature setting value to a value corresponding to a position of the drag button; wherein the controller sets a cancel area such that when the cancel area is touched at a the controller configured to perform change processing to cause the display to display a drag button and a movement path on which the drag button moves, provide, on the touch sensor, a drag area that detects a drag input on the drag button and a reference point disposed at a location off the movement path, set the drag area larger than a display range of the movement path, move the drag button to a crossing point where a straight line or a specific curve connecting the reference point to a drag operation position in the drag area crosses the movement path, and change the temperature setting value to a value corresponding to a position of the drag button; wherein the controller sets a cancel area such that when the cancel area is touched at a time of the drag operation of the drag button, the change processing of the temperature setting value is ended, and the controller configured to: cause the display to display the movement path as a non-linear shape, associate a value from when a position of the drag button is at a one end of the movement path with a lower limit value of the temperature setting value, associate a value from when the position of the drag button is at the other end of the movement path with an upper limit value of the temperature setting value, and set the cancel area to a range connecting a periphery of the one end of the movement path to a periphery of the other end of the movement path; wherein the controller is further configured to cause the display to display the movement path as a circular arc shape or an elliptical arc shape; and disposes the cancel area at a position surrounded by the movement path. associate a value from when the position of the drag button is at the other end of the movement path with an upper limit value of the temperature setting value, and set the cancel area to a range connecting a periphery of the one end of the movement path to a periphery of the other end of the movement path; wherein the controller is further configured to cause the display to display the movement path as a circular arc shape or an elliptical arc shape; and disposes the cancel area at a position surrounded by the movement path.