An improved wireless remote controller for controlling each of several devices under control in each mode of operation without requiring any switching among devices under control and thus having no device switching key mounted thereon. The wireless remote controller has a plurality of operation selection keys and is designed to operate in such manner that when the controller is directed toward one of the devices under control and any one of the operation mode selection keys is depressed, a corresponding operation mode signal is generated and transmitted to a device under control. The operation mode signal includes a series of consecutive signal components for operating all the devices under control. The device under control responds only to the associated one of the signal components of the operation mode signal.