Abstract: A child detection system includes a warning system for detecting the presence of a child in a vehicle. The vehicle has a front seat area, a rear seat area, and an interior. The system comprises a plurality of pressure sensors each removably positioned selectively under one or both of the front and rear seat areas such that pressure on one of the seat areas actuates an associated one of the pressure sensors. A control is electrically coupled to an electrical power supply and is electrically coupled to each of the pressure sensors. The control is selectively coupled to the electric system of the vehicle such that the processor may detect when the vehicle is turned off. An alarm is operationally coupled to the control and emits an audible sound when any of the pressure sensors sense pressure. The control is turned on when the vehicle is turned off.