Program and household appliance system

The invention provides a program, an operation terminal having the program, and a household electrical appliance system having the household electrical appliance. Provided is a household electrical appliance product which manages operation rights regardless of a server. A program causes an operation terminal to display an operation screen for transmitting a command to a home appliance product, theoperation screen having an operation button corresponding to the command and being capable of switching the operation button to a depressible state and a non-depressible state; in a depressible stateand a non-depressible state, the colors of the operation buttons are different. When the operation button is in a non-depressible state, the operation terminal is enabled to execute at least two reason notification modes according to the reason that the operation button cannot be depressible. 本发明提供程序及具备程序、具有该程序的操作终端和家电产品的家电产品系统。一种家电产品，与服务器无关地对操作权进行管理。一种程序，使操作终端显示用于向家电产品发送命令的操作画面，操作画面具有与命令对应的操作按钮，能够将操作按钮切换为能够按下状态和不能按下状态，在能