touch screen panel kitIR touch screen Hardware Features:Size:15”/17”/18.5”/19”/20”/21.5’/22”/23.6”/24”/26”32”/37”/42”/47”/52”/55”/57”/60”/65”/70”/82”/100”/103”Glass thickness:3-6mmThe MIN touching diameter:6mmTouching object:non-transparent objectScan frequency:50HzCommunication interface:USB:12Mbps RS232:9600bpsData output:coordinate outputResolution:4096(W)*4096(D)Infrared rays distance:2.985mm*2.985mmResponse time:15-20msWorking Voltage:DC+5V±5%Power:USB or outerWorking electric current:180mAAnti-light interference:sunlight,incandescent lightWorking elevation:3000mTouching times:50 millionElectrostatic protection:connect 8KV,depart 15KVFlame retardant:94VCertification:Fcc CE UL RoHS CCCOS:WIN2000/XP/98/ME/NT/CE/VISTA/X86/LINUX