... maintenance,12years service life.Software featuresDriver for software so that Win XP/Win7 is completed compatible,Free upgrade for life,Offering free ... requirementMAX :5V,50mAPower consumptionAbout 0.25WSystem requiredWindows 98SE/ Me/ 2000 /XP/732bitWorking environment:Working conditionT:-10°C- 40°C;H:20 ...