Control system for controlling an occupant restraint device effective for protection of an occupant of the seat including a receiving device arranged in the vehicle for obtaining information about contents of the seat and generating a signal based on any contents of the seat, a different signal being generated for different contents of the seat when such contents are present on the seat, an analysis unit such as a microprocessor coupled to the receiving device for analyzing the signal in order to determine whether the contents of the seat include a child seat, whether the contents of the seat include a child seat in a particular orientation and/or whether the contents of the seat include a child seat in a particular position, and a deployment unit coupled to the analysis unit for controlling deployment of the occupant restraint device based on the determination by the analysis unit. The analysis unit can be programmed to determine whether the contents of the seat include a child seat in a rear-facing position, in a forward-facing position, a rear-facing child seat in an improper orientation, a forward-facing child seat in an improper orientation, and the position of the child seat relative to one or more of the occupant restraint devices.