Patent ID: 8232874

Claim:
A method of informing of a child left unattended in a locked vehicle, the method comprising the steps of: providing a sensor in a child seat, starting the sensor when ignition of the vehicle was turned off, generating a warning signal and transmitting same from a transmitter in the child seat after a predetermined time elapsed since the starting of the sensor, receiving the warning signal in the vehicle and sending same to a CPU of the vehicle, starting an alarm sound signal, and turning exterior alarm lights on, whereby a driver and passersby are alerted, their attention being drawn to the vehicle with the child left unattended, and if the sensor is not disabled, further unlocking door locks, and starting ignition and air conditioner to bring the temperature in the vehicle back to normal and make it possible for the driver and passersby to access the vehicle to prevent the child from being exposed to high temperature inside the locked vehicle and thus to rescue the child.