A display-and-operation device includes a housing, a display operation panel, a wireless communicator, a control board, and a holder. The display operation panel forms a display operation screen on an outer surface of the housing. The wireless communicator is included in the housing and includes an antenna to perform wireless communication with a communication object. The control board is included in the housing, to control the display operation panel. The holder is included in the housing. The holder holds the display operation panel. The housing includes an opening through which the wireless communicator is removable to an outside of the housing and a lid to open and close the opening. At least a part of the wireless communicator is arranged outside an outer peripheral edge of at least one of the control board and the holder when viewed from a side at which the display operation screen is disposed.