LM2596 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 3)

LED Numeric Display: The buck converter is equipped with an LED voltmeter display. The voltmeter has 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: If the input voltage is below 4V, the onboard voltmeter will not operate and no display will be shown. The voltmeter can be switched off by holding the switch for over 1 second and less than 4 seconds, then releasing it. Once the voltmeter is off, press the switch briefly to turn it on.
LM2596 Adjustable Buck Converter: The internal oscillation frequency is 150KHz. It is a second-generation voltage regulator with low power consumption and high efficiency. It is equipped with high-quality solid capacitors to improve circuit stability and durability and effectively filter out high-frequency noise.
Ease of Use: The LM2596 adjustable buck converter makes it easy to adjust the output voltage with a mini screwdriver. It comes with terminal blocks for quick connections, so soldering is not required.
Features & Safety: The input side of the LM2596 buck converter is protected by two diodes. If connected backward, it will not damage the module. It also has overheat and short-circuit protection. For power over 15W, improve heat dissipation.
Applications: The LM2596 buck converter works great in lots of different situations, like car power supplies, DIY projects, and industrial equipment. It is suitable for both professionals and beginners