Feature: 1. SMART DIGITAL VIEWER: Wirelessly connect the doorbell camera to your WiFi router. Monitor and communicate with visitors through noise reducing one way or two way intercom (view visitors, make video calls, take snapshots, record sound, etc.). Control the system functions through a mobile app, not an indoor display screen. 2. PIR DETECTION, HD RECORDING: This smart doorbell features a 1080P camera with a wide angle lens of 120°. It automatically switches between day night vision sensitivity (adjustable up to 2 meters). Comes with a IPS color LCD display supporting AHD images and videos. Motion detection (PIR motion sensor) triggers push notifications and video recording within seconds (stored on the card or mobile), ensuring 24 hour home security. 3. LANGUAGE SUPPORT, STORAGE CARD: Supports English and Chinese. Choose and set the appropriate language based on your country. Supports a maximum of 128GB memory card (not included) for HD snapshots, video recording, and playback. 4. MOBILE, USER SHARING: Easily set up the smart doorbell by holding the reset button for a few seconds, then scan the QR code on the mobile app with the doorbell and follow the voice prompts for the coming steps (display speed may vary based on mobile network conditions). Avoid using WiFi usernames longer than 32 characters, containing special characters or Chinese, as it may affect the successful setup. 5. EASY INSTALLATION, LONG STANDBY TIME: Our doorbell camera supports up to 30 days of standby time (typically 3 to 5 calls per day); equipped with a 5000mAh large capacity battery. Features low battery reminder and USB port for convenient charging. Widely used in homes, apartments, villas, hotels, offices, etc. Specification: Item Type: Smart Video Doorbell Material: ABS Operating System: For LiteOS Camera Pixel: 1080P Screen Size: 4.3 inch IPS LCD APP: For Android, for IOS Compatible Battery Capacity: 5000mAh Lithium Battery (included) Wide Angle: 120 degrees Support: Infrared Night Vision, Auto Snapshot, Monitoring Intercom, Motion Detection External Storage: Supports up to 128G memory card (not included) Suitable Door Thickness: Approx. 35 to 120mm / 1.38 to 4.72in Language: English, Chinese Applicable Door Hole Diameter: Approx. 14 to 30mm / 0.55 to 1.18in Operating Environment Temperature: -20 to 55℃. Package List: 1 x Display Monitor1 x Doorbell1 x Installation Bracket8 x Installation Screws2 x Washers1 x Power Cable2 x User Manual