This video intercom door phone system includes 1-outdoor color camera, 1-color LCD 7 inch screen. With an ultra-flat design,great sound quality, 24 selectable doorbell tones for additional personalization,integrated video doorphone and access control, it brings more convenience in daily use. The outdoor camera provides a 90-degree viewing angle, what's more, waterproofing and IR LED projection provides both durability and clear images no matter the weather or time of day/night. The indoor Monitor durable aluminum and Acrylic front panel in ashionable element and showily atmospheric unifies, provides brightness of screen, volume and music setting,Easy Surface mounting. Specifications Indoor Monitor: Screen: 7 inch 16:9 LCD display key Resolution: 800 x 480 Ring: 16-chord melody rings Panel Material:Aluminium alloy/ ABS Installation: Surface mounting input voltage:AC 100-240V 50/60Hz Working voltage:DC 15V, 1.5A Size:235 x 145 x 21mm/9.2 x 5.7 x 0.8inch Door Camera: Horizontal resolution:700 TV-Lines Image sensor:Colorful CMOS sensor Sensor Size:1/3,Visual angle:92 IR Led: 6pcs, auto on/off Panel Material: ABS Installation: Surface mounting Simple 4- wire connection Size:63 x 135 x 39 mm / 2.5 x 5.3 x 1.5 inch Packing includes:1 x Indoor 7-Inch color monitor (With a mounting bracket).1 x Outdoor camera with rain cover.1 x Power adapter.1 x Test cable.1 x 4-Core connection cable.1 x 2-Core connection cable.1 x Bag screws.1 x Manual Note: The extension wire is not included in the box,but we will provide the 4 pin connector for you connect the extension wires.You can use RVV4(4 core wire)/Cat5/Cat6 wires to extend the distance for monitor to doorbell, monitor to monitor according to your need, maximum distance 100-200 meters.