Features 1、[Advanced Operating System] This video doorbell uses for Dammini system, which is more stable, secure, and user friendly, bringing you an excellent user experience. 2、[HD Display and Sturdy Construction] Featuring 4.3 inch HD display and 1MP professional camera, ensuring clear imaging. Full metal zinc alloy peephole head with anti pry design ensures durability and security, difficult for intruders to tamper with. 3、[Enhanced Visibility] Equipped with infrared night vision technology, the visual doorbell delivers clear images both day and night. With 140 degree wide angle view, it provides a comprehensive perspective of the area outside your door. 4、[Customizable Ringtones] You can choose from a variety of music ringtones, adjust the volume, and activate the doorbell do not disturb mode. The camera can instantly catch visitor using single click photo taking and video recording functions. 5、[Motion Detection and Alert System] The PIR motion sensor automatically detects human movement, triggering push notifications and videos within seconds, stored on small memory card (not included) or phone, ensuring security for your home. Specification Item Type: Video Doorbell Material: ABS, Zinc Alloy Display Screen: 4.3 Inch HD Display Screen Operation Method: Button Lens Pixels: 1MP Professional Security Camera Viewing Angle: 140° Super Wide Angle Output Format: JPG Special Features: Super Night Vision, Doorbell Do Not Disturb Mode, PIR Motion Detection, Human Body Sensing, Photo Taking, Sound Recording, Video Message Function Power Supply: 1800mAh 3.7V Lithium Battery x 1 (Built in) Intelligent Adaptive System: Home Mode, Away Mode, Do Not Disturb Mode Optional Ringtone: Multiple Music Ringtones Available, Ringtone Volume Adjustable Storage: Maximum Support 32G Memory Card (Without Small Memory Card) Suitable Door Hole Diameter: Approx. 15-45mm / 0.59-1.77in Support Door Thickness: Approx. 35-110mm / 1.38-4.33in Main Host Size: Approx. 136x83x13mm / 5.35x3.27x0.51in Peephole Size: Approx. 62x62mm / 2.44x2.44in Package List 1 x Display 1 x Peephole Camera (Small Memory Card Not Included) 1 x Mounting Bracket 8 x Installation Screws 2 x Washers 1 x Power Cord 1 x User Manual