It is a non-isolated DC regulated power converter module with long service life. High performance and stable output power, convert 4-32VDC to 1.2-32VDC. High-quality components a high efficiency of up to 98%. Equipped with wiring terminals, wiring is simple and convenient. It has the function of constant voltage and current, and supports short-circuit protection. Application range: DIY a regulated power supply with constant current function, which is not afraid of short circuit during use, which can protect the load. Power your electronic equipment. Charge batteries, set the charging voltage and charging current according to the batteries of different voltage and capacity, with charging indicator function, convenient to observe the charging status. Use solar panels to supply power to charge batteries, with constant current function, which can prevent the battery from overcharging and effectively protect the battery. Drive high-power LEDs, which can be freely combined in series and parallel. As the vehicle power supply, it can supply power to your mobile phone, laptop or digital products. Method of setting voltage and current: Set the output voltage: According to the float voltage value of the battery you want to charge, or the voltage value of the LED after series or parallel connection, adjust the constant voltage potentiometer (CV) to set the output voltage to the required voltage. (Performed when no load) Set the constant current value: first adjust the CC potentiometer counterclockwise about 20 turns, connect the load with an ammeter, and adjust the CC potentiometer to the current value you need to set. The constant current value cannot be adjusted by means of a direct short circuit. Note: When setting the constant current, the voltage must be higher than 1.2V, otherwise the constant current function will be invalid. Module parameters: Module nature: Non-isolated step-down module (BUCK) synchronous rectification Input voltage: 4-32V (limit 36V) Output voltage: 1.2-30V continuously adjustable (delivered by default) 1.2-32V fixed output Input and output minimum voltage difference: 1V (requires input voltage to be higher than output voltage) Output current: 0-10A (long time natural heat dissipation within 6A, the temperature does not exceed 60 degrees. Please use derating when the ambient temperature is high.) Output constant current range: 0.3-10A (adjustable) Working temperature: -40~+85 degrees Working frequency: 150KHz Conversion efficiency: 98% typical (efficiency is related to input, output voltage, current, and pressure difference) Short circuit protection: Yes (the current limit is the current constant current value) Input reverse connection protection: None (If necessary, a diode can be connected in series in the input) Output anti-irrigation protection: None (if necessary, please connect a diode in series with the output) Wiring mode: terminal block, no welding, IN is input, OUT is output. Colour: red Material: metal Size: 60x26x23mm Package Contents: 1 * Buck module Only 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.