Abstract: An electronic device includes a connector including a pair of terminals connected to a power source, a voltage sensor provided to detect a voltage between the pair of terminals, a communication device provided to perform communication with an external control device through a network, and a controller configured to determine whether the connector is separated from the power source based on a voltage variation between the pair of terminals, control the communication device to request the external control device to cut off power of the power source when the connector is separated from the power source, and control to perform self-discharge.

Abstract: A control method is provided for an air conditioning control system which includes determining whether either a desired discharge temperature from an air-conditioning system to maintain the internal temperature of a vehicle at a desired internal cabin temperature and a desired evaporator temperature that is temperature of an evaporator satisfies a heater operating condition. The heater is then operated in accordance with temperature and traveling conditions of the vehicle to output a desired discharge temperature when the heater operating conditions are satisfied. When, however, a heater discharge temperature from the heater is greater than or equal to a reference heater or the heater discharge temperature is greater than the desired discharge temperature by at least a predetermined temperature or more, then the heater is turned off to prevent over consumption of electricity.