Flexzion MPPT Tracer 1210RN Charge Controller Solar Panel Battery Energy Regulator 12/24V INPUT 10A Maximum PV Input Power 130W(12V), 260W(24V) Excellent thermal design and nature air cooling; CE certificate Peak conversion efficiency of 97%; High Tracking efficiency of 99%; Several seconds tracking speed Very fast Sweeping of the entire I-V curve; 4- Stage charge with PWM output; Temperature compensation function Full power output in ambient temperatures up to 45 degree; Sealed, Gel, Flooded battery type optional ON/OFF, Dusk to dawn, 1-15h timer