... 2.professional factory supply 3.stable quality,with CE,ROHS 15" touch screen lcd displayModel NO.1503MPanel size15 inch TFT- ... video signalUSB (or RS232) for touchVideo input connectionMini D-Sub 15 Needles VGAFrequency30~80KHz/60~75HzPower supplyExternal Power Supply:100 to ... & adjustable stand,touch without shake 7",8",10.4",12",15",17",19",22" touch screen monitor available,any inquiry and need ...