... solar charge controller 12/24V auto 10A, 20A, 30A Max PV input 100V, 150V MPPT charging efficiency 99% TRACERMaximum Power Point Tracking Solar controller Tracer series controller ... 520W24V 780WSelf-consumption≤10mA(24V)CommunicationTTL232 / 8pin RJ45Temp. compensation-30mV/°C/12V(25°C) Epsolar Tracer-3215RN, 30A, 12V/24V MPPT solar charge controller, MPPT charge controller with timer