The Aqara Doorbell Camera G400 (Wired), model DB-C03D, is a smart doorbell camera that runs on continuous power, allowing you to monitor your doorstep from head to toe with 2K resolution and a 165° ultra-wide vertical field of view. With 1536x2048 pixel clarity, you can easily see visitors' faces and package details. Offering uninterrupted protection day and night, the device uses 940nm invisible infrared night vision to record clearly in the dark without drawing attention. With an IP65 rating, it withstands all weather conditions. This model offers flexible installation options: it works with existing doorbell wiring (8-24V AC/DC) or PoE (Power over Ethernet). Key technical strengths include on-device local AI for real-time motion and person detection without cloud dependency. You can set custom detection zones to receive notifications only for important events. Power requirements must be considered: for AC supply, a minimum of 8V/1.3A, or for DC supply, 8V/0.8A transformer is critical for stable operation, especially in night mode. With Wi-Fi 6 support, it provides faster and more stable wireless connectivity, while also allowing data and power transmission over Ethernet for the most robust connection. For 24/7 continuous recording, it supports microSD cards (up to 512GB) and NAS backup. The G400 enables instant two-way audio calls with visitors or preset quick replies. It is fully compatible with popular smart home platforms such as Apple HomeKit, Google Home, Amazon Alexa, and SmartThings. When used with Aqara smart locks, you can see who is at the door and unlock it remotely. Each user receives a free 3-month HomeGuardian Plan, turning your entryway into a professional security solution. Technical Specifications: - Model: DB-C03D - Brand: AQARA - Video Resolution: 1536x2048 (2K) - Field of View: 165° (diagonal) - Power Input (AC): 8-24V AC, 1.3A, 50/60Hz - Power Input (DC): 8-24V DC, 0.8A - PoE Support: IEEE 802.3af (48V) - Wireless Connectivity: Wi-Fi 6 (2.4/5GHz), Bluetooth, RF433MHz - Local Storage: microSD (up to 512GB) - Night Vision: 940nm infrared - Water and Dust Protection: IP65 - Operating Temperature: -20°C to 50°C