IR Touch Frame Model: TT-42 Size: 42â ( 16: 9) ( optional) Touch precision: 8192* 8192 Writing styles: hand/ pen Light transmittance: e92% Max: 100% ( no glass) Position Accuracy: d 0.2mm Anti-light intensity: Direct under the sunlight Data connector: USB2.0/ wireless RF2.4G/ RS232( optional) Power supply: by USB, no need other cable. Cusor speed: g125 DOT/ S Transmission speed: 12M/ s Scan speed: first dot 25ms, following dot 8ms