EPSolar Tracer-1210RN MPPT 10A Solar Panel Regulator Charge Controller 12/24v Auto Work for Off Grid Battery Charging 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 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; Diversified load control: Manual, Dusk to Dawn, Dual timer, TEST; Max PV input power 130W for 12V system, 260W for 24V system;