Abstract: A safety alert system for alerting a user to a person, animal, or article unintentionally left in a vehicle includes an alert module that is configured to couple to an ignition key of a vehicle and sensing module that is configured to selectively couple to a person, animal, and article that is positioned in the vehicle. The alert module comprises a first transceiver, a first proximity sensor, and a first speaker. The sensing module comprises a second transceiver and a second proximity sensor, which is operationally coupled to the first proximity sensor so that a separation between the sensing module and the alert module is measurable. The second transceiver signals the first transceiver in event the separation exceeds a predefined distance, positioning the alert module to broadcast an alarm via the first speaker to alert the user that the person, animal, or article still is positioned in the vehicle.