use the wide power supply and it is 22-32V DC shock-proof, easy installation prices are negotiable Technical ReferenceDisplay Screen19 inchLCD ... portRCA input or VGA input(optional)Input VoltageDC 22-32V DC Shape Size (mm)Length:480mm×320Width:mm×Height:83mmNet ... DC22-32V2. Small size light weight, small power, small footprint, shock-proof, easy installation3. One video signal input, one VGA signal ...