1.Over current protection: there is a certain range of error in the input over 30A, automatically reducing the output voltage. 2.Short circuit protection: there is (input 40A fuse) double short circuit protection, use more secure. 3. When using the boost power supply should pay attention to the following points: input power supply voltage must be above 10V. when the power supply is used for the input power supply, the input power and the output voltage of the input power supply are the first to be unloaded. 4.Then pick up the load. (must ensure that the switching power supply has been working). when the constant current mode is used to set the voltage, the constant voltage must be higher than the input voltage.Do not use the way of short circuit output current, the circuit structure of the boost module can not be adjusted in short circuit way. Module name: 1200W boost constant current module Module properties: non isolated boost module (BOOST) Input voltage: 8-60V Input current: 20A Quiescent operating current: 15mA Output voltage: 12-83V continuous adjustable Output current: MAX 12A over 20A, please strengthen the cooling (with input and output differential pressure, the greater the pressure difference between the output current is small) Constant current range: 0.3-20A Output power: = input voltage *10A Working temperature: -40~+85 degrees Working frequency: 150KHz Conversion efficiency: ≤95% (efficiency and input, output voltage, current, pressure difference) Installation: 4pcs 3mm column Connection mode: welding output (please use big current and pure copper wire) Module size: 130mm x 52mm x 46mm(LxWxH) Material: Plastic + Metal colour: red Package Contents: 1 x DC Converter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the it Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.