This 9 TFT-LCD single view monitor comes with a super sharp digital image, built-in speaker, touch buttons below the screen and 3 video inputs. This allows for the connection of up to 3 cameras simultaneously. The RVS-97 has a quick installation and is easy to operate. With a wide voltage range, this monitor works with both 12V and 24V systems. The RVS-97 also features built-in distance grid lines.