Patent ID: 8890487

Claim:
A wireless device which wirelessly communicates with an external entity and controls a predetermined device according to a control signal transmitted from the external entity, the wireless device comprising: a switch for receiving AC power supplied from an AC commercial power source; a converter for converting the AC power received in the switch into DC power; a charging battery; a charging circuit for charging the charging battery with the converted DC power; and a control unit for simultaneously turning off the switch to block supply of the AC power, converting an operation state of the wireless device from a normal mode to a standby mode, and turning off the predetermined device, in response to receiving an operation-off signal instructing the control unit to turn off the predetermined device which is transmitted from the external entity, wherein the predetermined device controlled by the wireless device is located externally to the wireless device, wherein, in the normal mode, the charging circuit supplies the control unit with the converted DC power, and in the standby mode, the charging battery supplies the control unit with the converted DC power stored in the charging battery.