RioRand (TM) MPPT Tracer 1215RN Solar Charge Controller Regulator 12/24V INPUT 10A New RioRand MPPT technology; 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 MPPT 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 Diversified load control: Manual, Dusk to Dawn, Dual timer, TEST;