Feature:1. With micro memory card slot, support 32GB memory card (not included). There are 4 infrared LED lights, LED backlight automatically on.2. Support picture and video display date and time function. 4pcs AAA batteries (not included) power supply, support low voltage alarm.3. 2.8inch Super bright LCD screen, clear and smoothly image or video display, and take a 10second video when there are guests outside.4. Easy installation and operation, no need for special tools, save time and effort, 24hour security monitoring to protect you and your family day and night.5. 0.3MP High definition camera, used for highdefinition picture photography and video recording, timely and clear to record tourist information.Specification:Item Type: Door ViewerMaterial: Plastic + electronic componentsDisplay: 2.8-inch LCD screenImage Sensor: 1.3 MegapixelsVisual Angle: 120 degreesPower Supply: 4pcs AAA battery (not included)Memory Card: Support up to 32GB (not included)Tones: 3Languages: 12Lights: 4Applicable Door Hole: Approx. 15 ~ 60mm / 0.6 ~ 2.4inApplicable Door Thickness: Approx. 40 ~ 100mm / 1.6 ~ 3.9inIndoor Door Viewer Size: Approx. 110 x 74 x 17mm / 4.3 x 2.9 x 0.7inOutdoor Door Viewer Diameter: Approx. 65mm / 2.6inFeatures: Photo/video.Package List:1 x Display Screen 1 x Camera 1 x Manual 6 x Install Buckle 1 x Install Rack