DC-DC Buck Converter Modules LM2596S Adjustable Voltage Regulator, 2 Pcs

LED Precise Parameters Display: input voltage 4V-40V, output voltage 1.25V-37V, max output current 3A (recommended 2A for stable use), conversion efficiency up to 92%, output ripple under 30mV, switching frequency 150KHz, operating temperature -45C to +85C, the buck converter features an LED voltmeter display with a measurement error of 0.1V | Triple Safety Protection: built-in overheat, short-circuit, and current-limit protection keep your circuit safety; Two diodes on the input side provide reverse polarity protection no damage if connected backwards; Solid capacitors improve circuit stability and filter out high-frequency noise effectively | Lm2596s Simple to Operate: adjust output voltage with a mini screwdriver in seconds; Press briefly to switch the LED display between input and output voltage readings; Hold 1-4 seconds to turn the voltmeter off and save power; Terminal blocks allow tool-free wiring no soldering required | Adjustable Buck Converter: it's a second-generation voltage regulator with low power consumption and high efficiency; Features 150KHz internal oscillation frequency with up to 92% conversion efficiency significantly less heat than linear regulators; Built with solid capacitors for long-term stability; For continuous loads over 15W or 2A, adding a heatsink is recommended | Wide Applications: package includes 2 x LM2596S adjustable DC-DC buck converter modules; Ideal for car power supplies, DIY adjustable power supply,3D printers, industrial equipment, and LED lighting; Supports common conversions: 36V/24V/12V to 5V, 24V to 12V, and more; Suitable for both beginners and experienced engineers