Description : 20A 12V\/24V MPPT Waterproof Solar Panel Charger Controller Regulator Battery   Features :  Waterproof solar charge controller. Anti-anti-charge、 three overload、 short circuit、 reverse polarity、 over-charging、 over-discharging、 complete system protection. Detail mode display、 failure warning、 charging indicator、 battery status、 load status indication、 control all the features of a key、 simple operation.  Fully sealed waterproof housing、 with perfect performance waterproof、 waterproof grade up to IP68. It adopts PWM charging control、 charging efficiency is higher 3% -16% than non-PWM. Power point tracking MPPT charge control algorithm. Suitable for all 12\/24V DC lamps.   Specification :  Color: Black Size: Approx. 10.5 x 8 x 2.7cm \/ 4.13" x 3.14" x 1.06" Operating voltage: 12V\/24V Operating current: 20A Waterproof: IP68 Operating temperature: -35\u2103 to +55\u2103 Charging: PWM Weight: 438g   Package includeds :  1 x MPPT Solar Charger Controller 1 x User Manual   Details pictures :