The Aqara Doorbell Camera G400 (DB-C03D) is a wired security solution designed to keep a close eye on your entrance. It captures video in 2K resolution with a 3:4 vertical aspect ratio and a 165° diagonal viewing angle, ensuring you can see visitors from head to toe and monitor a wide area of your porch. To maintain visibility regardless of the lighting, it uses 940nm invisible infrared for night vision, while its IP65 rating protects the internal components from dust and water in various weather conditions. Connectivity is flexible, supporting Wi-Fi 6 and Ethernet, with power options including PoE, AC, or DC inputs. You can manage your recordings locally via a microSD card of up to 512GB or through an SMB NAS backup, avoiding a reliance on cloud storage. The device handles intelligence on-board, using local AI for person detection, motion sensing, and zone intrusion alerts. It integrates easily into existing smart home setups through RTSP, ONVIF, and HomeKit Secure Video protocols. Measuring 140.97 x 52.97 x 32.4 mm, the unit is compact and comes with a dedicated chime and a 15° wedge to help you adjust the viewing angle during installation. It is built to operate in temperatures ranging from -20°C to 50°C, making it a reliable choice for homeowners who need a stable, wired connection for their front door security.