This is a sample of Video Intercom Doorbell. It including CCD camera outdoor +monitors indoor + Video/Power Cable . You can freely Portfolio CCTV Systems by your Solutions Program .Two ourdoor camera + one monitors indoor ; one camera outdoor + two/3/4 monitors indoor . TWO cameras outdoor + 1/2/3/4 monitors indoor . We supply the following related products : security surveillance equipment,Complete CCTV equipment, IR cameras,CCD camera, explosion-proof camera ,waterproof camera ,color camera,zoom camera,dome Camera,420TV Lines camera, HD 480TV/520TV/540TV/600TV Lines camera,Gun-shaped camera and other related Accessories. E-mail or MSN us.