【Real-time Remote Video Call & Preset Voice Quick Response】When someone presses the doorbell (the doorbell outside the door and the indoor Wi-Fi base station ring simultaneously), the AOSU intercom automatically sends a silent video call to your smartphone. You can choose to make a real-time video call and select voice changes during the call, choosing the voice of an old man or a clown to interact, protecting your safety. 【5MP Image Quality & Radar + PIR Human Body Detection & Anti-theft】Upgraded to 5MP image quality, making the image clearer. AI human body radar detection eliminates false alarms caused by light spots, insects, and animals, and only delivers real-time alarm information when a person presses the doorbell. Accurately detects the distance between a person and the door (within 6 meters) and pushes real-time information notifications, ensuring a prompt response time. Anti-removal alarm: If someone violently removes the doorbell, a sharp alarm sound will be emitted from the doorbell. 【166° Ultra-Wide Viewing Angle & Infrared Night Vision】The AOSU intercom with a camera has an ultra-wide viewing angle of up to 166° horizontally and a vertical viewing angle of up to 100°, allowing you to perfectly capture the desired field of view information. 【Super Powerful Endurance & Installation Support Up to 380 m】No need to replace the battery, with two charging methods. The AOSU wireless intercom has a built-in 5200mAh rechargeable lithium battery. USB charging lasts for 6 months on a single charge. It also supports low-voltage wire charging mode. By selecting the low-current power mode, there is no need to disassemble the doorbell for charging, and it will continue to operate. This doorbell is equipped with a Wi-Fi base station, which can extend the Wi-Fi signal distance, extending from the Wi-Fi base station to the outdoor doorbell up to 280 meters, and from the router to the Wi-Fi base station up to 100 meters. 【IP66 Waterproof Rating & Cloud Storage】IP66 waterproof level. The AOSU doorbell can record 60 days of cyclical events, using built-in 8GB of memory to directly store videos on the Wi-Fi base station, allowing you to view recorded events anywhere without paying monthly fees. 12-8, ,