... Touch screen: 9 inch resistive touch screen available, can recognize up, down, left, right side "swipe"; support two- point touch to ... 800 x 3(RGB) x 480Brightness: 400cd/m²Viewing angle: up: 50°, down: 70°, left: 70°, right: 70°Operating temperature: -20 ... control receiver head2Power switch3Volume/Value down4Volume/Value up5Menu selection down selector6Menu7Channel switch8Light Sensitive Resistor IC