1.(-Scope of use-): This Hybrid charge controller match all 12/24v battery, including Lithium Battery. Suit max 800w wind generator and max 600w solar panels for wind solar complementary system for home, boat, street light. 2.(-Operational system-): The wind turbine charging part adopts booster MPPT technology, which charge continuous and efficiently even in low wind speed. Stepless unloading function including an external dump-load resistance. Solar panel charging use PWM technology by MOS tube in series. 3.(-Display&DC Load mode-): Bigger LCD screen which easy to browse and handle. DC Load (output) with 3 output modes and each one can be set different model. 4.(-Protection function-): Reversed charging Protection of solar, over charge voltage/under voltage & Over load voltage Protection, battery reverse connects and open circuit protection, etc. Colour:Black Material:plastic Package Contents: 2 x Hybrid Wind Solar 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.