Learn to pronounce the Netgear Arlo 4 camera is designed to detect both sound as well as motion. The sounds are recording in the camera's cloud storage. The motion-activated camera automatically records when motion is detected. The basic purpose of the camera is to capture and record all the activities performed every day. You should know that the camera features are very awesome. If motion alerts you to notifying with email at the time of motion detected. Motion detection can be reported when motion is detected.