CCTV controller: 1.Control matrix, DVR, PTZ camera 2.3-D,Backlit ... system control and programming. It can control DVR,Matrix,speed dome camera with one keyboard.The DS-1676 ... a user-friendly tactile-feel control keys. Features:Control matrix, DVR, and PTZ products with one keyboard.Backlit ... can be set in menu.One key toggle for switching Matrix,PTZ and DVR.Buzzer effect and backlight .Password protection ...