Video Door Phone Doorbell Intercom System with IR Camrea for 2 Apartment Features: Indoors Machine: 1. 7in digital color LCD screen, no radiation, low power consumption, true high-definition 16:9 wide screen display. 2. Ultra-thin design, acrylic panel with blue backlight button 3. This product has hands-free intercom function, proactively monitor outdoor function and one-button unlock function 5. The brightness, chroma and volume of the image can be adjusted at will.   Outdoors Machine: 1. Electronically controlled unlocking function 2. All metal waterproof, explosion-proof. 3. Two discrete buttons. 4. Night vision function, 6 night vision infrared lights. 5. Internal and external machine talk intercom function   Specification: Condition: Display Resolution: 840*480 System: PAL / NTSC System (choose one) Power Supply Mode: Switching Power Supply AC110-240V 50Hz / DC15V 2A Machine Current: less than 800mA Call Delay Time: 120S ±10% Monitoring Delay Time: 60S ±10% Camera sensor: HD color CMOS; 700 lines Outdoor Infrared Night Vision Function: Low-open 10LUX Infrared on Indoor Unit Installation Method: Wall-mounted Outdoor Unit Installation: Wall-mounted Connecting Cable: 4-core Connecting Cable + Two-core Terminal Cable 15cm(connected to electric lock) Weight: Approx. 2435g / 85.9oz Size: Approx. 225 * 128 * 23mm / 8.9 * 5.0 * 0.9in(indoor machine)                       180 * 90 * 20mm / 7.1 * 3.5 * 0.8in(outdoor machine)   Package List: 2 * Indoor Machines(7in Color LCD Display) 1 * Outdoor Machine(camera) 2 * Connecting Cable(Standard 5M Length) 1 * Two-core Terminal Wire 2 * Power Supply 2 Package of Screws 4 * Four-core Terminal Wires