... and receivers;4, Intelligent postil, quick switch, power supplier via USB ( >5M );5, Modularization design, convenient for maintenance;6, ... ;2, The popular software in foreign ;3, Rapid and real-time response, no writing delay or intermittent stroke;4, Press on ... life: >60000000 single point touchWorking voltage : DC4.6V-DC5 V, USB power supply.Working current: <200mAWorking temperature: -10°C ~ 50° ...