... are avaliable. Dual RS232 and USB ports 17inch SAW touchscreen specCompany Name: Shenzhen KeeTouch Electronic Co.,Ltd. Product Category ... clear glass,transducer bevel mounted,water-proof type. Technology: Surface Acoustic WaveSize: 17inch, 4:3 (from 7"-47"are ... without failure.Touch medium: fingergloved fingerrubber soft pen etc.Surface hardness: Mohs' hardness rating of 7Operating temperature: -20 ...