1.Good quality technical components stability and reliability. 2.Complete electrical protection features that make the system more . 3.Anti-water,anti-dust shell applicable in outdoor environment. 4.Voltage/current control charging make storage batteries are 5.small size,good for heat dissipation. Input Voltage:12V/24V, 48V AC (Three-phase) Output Voltage:12V/24V, 48V DC Waterproof:IP67 Protection: Battery overvoltage protect,wind-generator current limit,wind-generator brake,speed protection Indicator:LED Capability:Mode charge Unloading way:MPPT electrodeless and noiseless unloading Working temperature:-35 +75/85%RH(no condensing) Maximum Current:20A Application:Charger Controller Controller type:Wind Charge Controller Rated Charge Voltage:12V 24V Auto,48V Rated Charge Current:20A Application:Wind Turbine ,Streetlight,Boats use... Colour:Orange Material:plastic Package Contents: 1 * MPPT Charge Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.