An apparatus is provided for warning when a child has been left in a baby car seat and when one or both of: (i) a vehicle door has been opened, and (ii) a key ring remote unit is not within a predetermined zone about the vehicle. The apparatus includes a child detection mechanism for detecting the presence of a child within a baby car seat located within the vehicle; a door position detection mechanism for detecting the state of the driver side door of the vehicle; a range detection mechanism for detecting the range of a key ring remote from the vehicle; a control unit for generating an alarm signal when the child detection mechanism detects the presence of a child within the infant seat and either or both: (i) the door position detection mechanism detects that the state of the driver vehicle door position has been modified from a “closed” position to some other position, and (ii) the range detection mechanism detects that the key ring remote is no longer within the predetermined range from the vehicle; and alarm units for generating an alarm or alarms in response to the alarm signal.