IEE has designed the innovative seat belt reminder system to detect the presence of a car occupant over 15 kg in the front passenger seat and/or the rear bench of the car. The system, connected to a seat belt buckle triggers a warning light reminding the seat occupant to fast his or hear seat belt. If an occupant's (adult or child) seat belt is unbuckled during the ride, the system triggers an optical and/or acoustic signal warning the driver of the car.