Feature: 1. High Definition Night Vision: Digital doorbell viewer has 4.3in high definition screen, can see everything outside the door very clear even in night.    2. Premium Material: Video doorbell camera is made of premium ABS, zinc alloy, aluminum alloy material, breakage proof, sturdy and durable.    3. Multifunction: By connecting the wireless router at home, can realize the 2 way audio, photographing and recording, etc. 24 hour intelligent security monitoring.    4. Easy Installation: Iron doors, wooden doors, security doors, glass and wood doors can be installed, convenient for using, save your time and energy.    5. Wide Application: Peephole camera is suitable for all kinds of places, such as homes, apartments, office buildings, hotels and other places.       Specification:            Item Type: Smart Video Door Viewer Material: ABS, zinc alloy, aluminum alloy Application: Suitable for all kinds of places, such as homes, apartments, office buildings, hotels and other places, iron doors, wooden doors, security doors, glass and wood doors can be installed    Supported APP: For Tuya APP Operating System: For LiteOS    Camera Pixel: 720P   Screen: 4.3in, TN, 480x272 Battery Capacity: 3000mAh lithium batteryx1 (built in)    Monitoring Intercom: Supported Motion Detection: Supported    External Storage: Micro storage card (up to 64G)    Night Vision Wavelength: 850nm    Charger: 5V/2A    Applicable Door: Diameter approx. 14-35mm/0.55-1.38in    Applicable Door Thickness Range: Approx. 35-100mm/1.38-3.94in    WiFi: IEEE802.11b/g/n 2.4GHz                Package List: 1 x Camera   1 x Screen    1 x USB Cable    4 x Screw    1 x User Manual        Note: 1. Do not place the product in an environment with excessive corrosion, humidity and high temperature.    2. Please supply power according to the operating voltage. Using other voltages may cause fire and damage to the product.