Features: The Automatic Step Down DC DC Adjustable Converter Power Supply Module offers a seamless voltage conversion with up to 93% efficiency, making it for efficient power management. This module can be applied in the field of voltage reduction where the input voltage is higher than the output voltage, such as batteries, power transformers, DIY adjustable voltage regulators, 24V car pen and meter power supplies, industrial equipment voltage reduction, 12V to 3.3V, 12V to 5V, 24V to 5V, 24V to 12V, 36V to 24V, etc. The buck converter supports a broad input voltage range from 2.5V to 40V, making it ideal for various applications, including DIY electronics, solar power systems. Achieve up to 92% conversion efficiency with this step-down regulator, ensuring stable and efficient voltage regulation for your devices. Built-in thermal shutdown and current limit protection safeguard your devices from overheating and overload; Specifications: Component:PCB Size:Approx.4.3x2.1cm/1.69x0.83inch, 66x36x14mm/2.6x1.42x0.55inch Option Type: DC-DC Buck Converter without Display, DC-DC Buck Converter with Display, DC-DC Buck Converter with Button, Input Voltage: 2.5V~40V Output Voltage: 1.25V~35V (adjustable) Output Current: 3A Conversion Efficiency: 92% Output Ripple:< 30mV Switching Frequency: 150KHz Working Temperature: -45℃~+85℃ Note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color. Package includes: 1pc DC-DC Buck Converter Converters Adjustable Power Supply StepDown Module