PURPOSE: To notify a location of an object such as a remotely controlled device or the like by sending a signal from a transmitter and allowing a receiver added to the object being a searching object to generate a reception tone.

CONSTITUTION: A transmitter 1 is fixed integrally on a side face of a television receiver 3, but preferably built in the television receiver 3. Furthermore, a receiver 2 is fitted integrally to a bottom of a remote commander 4 and the transmitter 1 has a switch. Moreover, the receiver 2 is made up of a tuning circuit, a level conversion circuit, and a buzzer circuit and uses two dry batteries but has no switch. A trimmer capacitor is used for fine-adjustment and each capacitor has a different impedance depending on a radio wave frequency. Then the transmitter 1 located at a prescribed position sends a radio wave and the receiver 2 attached to an object such as a remote commander 4 of a house appliance in advance generates a reception tone, then the location of the object is recognized.