CCTV controller: 1.Control matrix, DVR, PTZ camera 2.3-D ... system control and programming. It can control DVR,Matrix,speed dome camera with one keyboard.The DS- ... matrix, DVR, and PTZ products with one keyboard.Backlit keys and easy-to-read displays.Simplified system programming with an intuitive interface ... set in menu.One key toggle for switching Matrix,PTZ and DVR.Buzzer effect and backlight .Password ...