High conversion efficiencyOutput constant voltage and current adjustable.There is output over-current protection indicator.There is an output indicator.High reliability and stable operation.Main parameters:1. Product Name: high DC step-down module supply.2. Input voltage: dc7v-50v.2. Input current: 20A max.4. Output voltage: 0v-36v adjustable.5. Output : 800W max.6. Conversion efficiency: 93-95% (efficiency is related to input and output voltage and current).7. Working temperature: - 20 ~ 60.Main uses:1. High solar street lamp drive.2. All kinds of LED lighting constant current drive.3. supply for vehicle and various mobile devices.4. DIY adjustable constant voltage and current supply.5. Solar charging supply.6. Charge various batteries.colour: greenMaterial: metal + PCPackage Contents:1 x Dc Step-Down Supply ModuleOnly the above package content, other products are not included.Note: Light 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.