With a 166°wide viewing angle, a 4:3 aspect ratio, you could see a person from head to toe or the package on the ground. AOSU video doorbell supports local storage and cloud storage services. Adopted the latest AI algorithms to identify humans in the video, reducing false alarms caused by moving objects like animals. It is equipped with a signal-enhanced base station repeater to maintain a more stable 2.4G Wi-Fi signal connection. When a visitor rings the bell, you can answer/hang up the video call directly, select a preset quick voice reply, or use a voice changer to protect your privacy.