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    Adjustable DC-DC Step-Down Buck Converter Module with LED Voltmeter Display, Voltage Regulator 4.0-40V Input to 1.25-37V Output Power Supply Module (Pack of 2)

    • About this item
    • LED Numeric Display: This buck converter features an LED voltmeter display with a measurement error of ±0.1V. The input voltage range is from 4.0V to 40V, and the output voltage range is from 1.25V to 37V. Note that if the input voltage is below 4V, the onboard voltmeter will not operate and will not display anything. The voltmeter can be turned off by holding the switch for over 1 second and less than 4 seconds, then releasing it. To turn it back on, simply press the switch briefly.
    • Adjustable Buck Converter: The internal oscillation frequency is 150KHz. It is a voltage regulator designed for low power consumption and high efficiency, featuring high-quality solid capacitors to enhance circuit stability and durability, while effectively filtering out high-frequency noise.
    • Ease of Use: This adjustable buck converter allows for easy output voltage adjustment using a mini screwdriver. It includes terminal blocks for quick connections, eliminating the need for soldering if preferred.
    • Features & Safety: The input side of the buck converter is safeguarded by two diodes, protecting the module from reverse connections. It also offers overheat and short-circuit protection. For power exceeding 15W, its recommended to enhance heat dissipation.
    • Applications: The buck converter is suitable for various applications, including car power supplies, DIY projects, and industrial equipment. It is designed for both professionals and beginners.
    • Dimensions: 4.9 x 3.5 x 0.5 in
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    First Listed on Newegg March 07, 2026

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