IR Touch Screen 17",IR touch panel * Vandal proof, scrape-resistant *Maintenance free.longer life expectancy Infrared Touch Screen , IR touch screen panel ,IR add-on multi-touch screen ,Multi-Touch Infrared Touch screen. Infrared Touch Screen , IR touch screen panel ,IR add-on multi-touch screen ,Multi-Touch Infrared Touch screenElectricity Operating Voltage : DC 5V +/-5% Power Supply : External ...