A communication methods, including: receiving first information by a first control panel of a plurality of control panels; determining one or more target control panels from the plurality of control panels (S101), where the plurality of control panels are disposed in different rooms, or at least partially at different locations in a same room; for each of the one or more target control panels, detecting whether a room where the target control panel is located is occupied (S102); in response to determining that there is an occupant, sending the first information to the target control panel by the first control panel (S103), and outputting the first information from the target control panel (S104); and in response to determining that there is no occupant, generating first prompt information by the first control panel (S105).