... 7 to 47 are available Dual RS232 and USB ports 19inch touch screen spec.Company Name: Shenzhen KeeTouch Electronic Co.,Ltd ... ,transducer bevel mounted,water-proof type. Technology: Surface Acoustic WaveSize: 19inch, 4:3 (from 7"-47"are available)Feature: Anti-dust ... glue tapedust-proof tapeAgency Approval: UL, CE, FCC, RoHS, CB 19inch touch screen(Dust-proof)