Feature:1. LCD Display and Waterproof: This video doorbell has a ultra thin LCD display with HD color display, no radiation and low power consumption. And it has IP55 waterproof for easy to apply at home.2. Practical Features: Infrared night vision is for clearly view at night. 25 kinds of doorbell ringtones can be switched with you. Volume, brightness and contrast can be adjusted.3. Two Way Intercom: Supporting two way intercom, this video door phone enables real time video calls between people inside and outside the door.4. Electronic Lock: Equipped with electronic lock control, this smart doorbell has a delayed unlock function. Universal design makes it suitable for most of the electronic locks on the market.5. Easy Installation: With the adapter and cable provided in this kit, you can easily install our video door phone. It can be used by directly after connecting to the applicable power.Specification:Item Type: Video Door PhoneMaterial: ABS, aluminumWeight: Approx. 1621g or 57.18ozSize:Indoor Monitor: 18.2x12.2cm or 7.17x4.80inBell:15.5x10.2cm or 6.10x4.02inResolution: 800x480Camera: 1 or 4 inch HD color CMOS can reach 700 linesCamera Lens: 3.6mmCamera View: 92 degreesCall Duration: 120 secondsMonitoring Duration: 60 secondsPower Consumption: Static 0.5WPower Output: DC15VWaterproof: IP55Use: Home.Package List:2 x Indoor Monitor1 x Doorbell2 x Power Plug7 x Color Cable2 x White Cable20 x Screw1 x Hex Wrench1 x Black Accessory16 x Green Expansion Tube1 x Instruction Manual