1、Visual Intercom: Visual intercom system makes your home safer by allowing you to see, hear, and communicate with anyone outside your home when someone presses the call key. Simply press the Unlock key on the in room display to welcome your visitors. 2、7 inch TFT Display: The visual doorbell comes with a 7 inch TFT display that allows easy adjustment of brightness, volume, contrast and multiple ringtone options to monitoring external views. 3、Clear Visual and Sound Communicating: Smart doorbell clear visual and sound communicating allows you to see and hear security monitors and displays, ensuring effective communicating. 4、One To Two Interconnection: Villa wired doorbell can achieve one tow two connection, all monitors can see, hear, talk with the outdoor doorbell and unlock. Indoor extension unlocking, swipe card unlocking, a variety of unlocking methods more flexible. 5、Easy to Install: The visual doorbell adopts cable connection signal stability, equipped with adapters, rain cover, installation bracket, 4 core wire, screws and other accessories, can be used in apartments, villas, hotels, offices, public buildings. Item Type: Smart Doorbell Material: ABS Camera (Outdoor): Camera: 1/4 high definition CMOS Light Source: 6 infrared lights Resolution: 800x600 pixels Single Display (Indoor): Resolution: 800x 480 Number of Displays: 2 2 x Indoor Units 1 x Outdoor Unit 7 x Connecting Cables 2 x Plugs 1 x User Manual 5 x Keys