... % 50Hz/60Hz +/-3%2.GMT power inverter feature:1),GMT inverter apply in car,marine,solar electric power/wind electric power,motive office ... and compatible,no environmental protect,no maintenance,3.GMT power inverter (with charger UPS )specification details: ModelCA2000SpecificationINPUT DC12V, OUTPUT AC220VINPUTInput voltage12VWorking voltage 10V ...