Swann Sw347-Dv7-7-Inch LCD Color Door Intercom with DB-815 Camera Maximize your personal safety by seeing who's at the door before opening it 7"/17.5cm color flat LCD screen 380 TV Lines 4 core cable (supplied with 50ft / 15m of extension cable) 7" Lcd Monitor With Built-In Speakers Color Intercom With 2-Way Audio 1/3" Cmos Sensor Provides 380 Tv Lines Image 13-Ft Night Vision Push-Button Door Opener