A system and method to warn that a child has been left unattended in the vehicle for a pre-set period of time after the ignition has been turned off. The system includes a sensing device to detect if a child is in the infant seat, an ignition detection device to detect that the ignition has been turned off, a timing microprocessor device to time the pre-set period of time and to generate an alarm and a page, a prerecorded voice message and speaker, a reset button to reset the timing of the pre-set period of time if desired by the caregiver, and an FM antenna with a manual page button.