Abstract: A safety system for protecting an occupant or occupants of an automotive vehicle from temperature extremes is automatically activated when the vehicle engine is turned off. A computer-based monitor unit, connected to a temperature sensor, an occupancy detector and at least one alarm device, compares the sensed temperature with predetermined high and low temperature reference levels and if the sensed temperature is either above or below these levels, and the vehicle is indicated to be occupied, activates the alarm device so as to indicate an alarm condition within the interior of the vehicle.