Feature:1. Human Motion Detection: When someone approaches the door 12 meters for about 2 seconds, it will automatically take pictures or save videos, preventing thieves.2. HD Night Vision: The security camera adopts high definition infrared night vision technology, day and night guard, professional security level.3. 4.5in LCD Display: 170 degree wide angle design, you can see the panorama. The 4.5inch high definition large screen makes everything outside the door clearer.4. Convenient Operation: Wake up with one key, press the watch button at any time, you can view the scene in real time, and press it again to record.5. Durable Construction: Zinc alloy shell, rustproof and durable, effectively prevent external impact and damage. Stable operating system, brand new user experience.Specification:Item Type: Video DoorbellMaterial: ABS, zinc alloyScreen Size: 4.5 inchesCamera Pixel: 2MP CMOSOperation Mode: Button typeViewing Angle: 170Photo/Video: SupportedOutput Format: JPG/AVIStorage Type: Memory CardPower Supply Mode: Lithium batteryCamera: Day and night professional security levelMotion Detection: Support (1-2m/3.28-6.56ft)Doorbell Sounds: Six Polyphonic RingtonesApplicable Door Thickness: Approx. 35-110mm/1.38-4.33inApplicable Door Hole Range: Approx. 14-50mm/0.55-1.97inBattery Type: 1 x 3.7V 3500mAh lithium battery (included)Battery Model: BL5CUses: Suitable for families, apartments, office buildings, hotels and other places, iron doors, wooden doors, antitheft doors, etc. can be installed.Package List:1 x Camera1 x Monitor1 x Mounting Plate6 x Screw1 x USB Cable1 x ManualNote:Do not place the product in excessively corrosive, humid and high temperature environments.