fully enclosed waterproof, wireless remote setting technology, no buttons exposed SOLAR CONTROLLERSystem voltage12V/24V ... 60oCWorking modePWM smart charging, Energy saving modeCommunicationInfraredWeight10A/20A: 250gIP GradeIP67(waterproof,anti-corrosion,anti-dust)WarrantyOne yearDISCLAIMER1) Sokoyo will NOT be ... , and Weather-ability Testing Machines, etc.. 20A DC12V/24V waterproof solar controller