The REA-L0300 optional license activates the Close-up by Gesture feature for the REA-C1000 Edge Analytics Appliance. When connected to a PTZ camera, the REA-C1000 can detect and respond to the gestures of audience members during a presentation. For example, the REA-C1000 can react when a member of the audience stands up, triggering the camera to zoom in on the participant as they make their point. It's particularly useful for capturing students' questions in lectures or audience feedback during Q&A sessions in corporate presentations.