Introducing the HKM-194451 Adjustable LM2596 DC-DC Step-Down Voltage Regulator Module—an essential tool for anyone working with electronics and power management. This versatile module features an intelligent design that offers high cost performance, making it a smart choice for both hobbyists and professionals alike.

Equipped with an on-board voltmeter, this regulator provides real-time voltage readings that can be self-calibrated to ensure accuracy up to ± 0.05V within a range of 0 to 40V. To maximize usability, the module includes a convenient touch button to toggle between input and output voltage measurements, with an indicator light to clarify which voltage you’re currently monitoring. Moreover, all settings are retained even when the power is turned off, making it easy to resume where you left off.

The adjustable output voltage range is designed for flexibility, allowing for continuous adjustments from 1.25V to 37V, provided that the input voltage remains at least 1.5V higher than the output. With an input voltage range of 4.0V to 40V, this module can handle a significant variety of applications. While the output current can reach up to 3A, it's recommended to operate within 2A to ensure longevity and efficiency, especially under higher loads that require enhanced heat dissipation.

The HKM-194451 module doesn't compromise on safety. It comes with built-in reverse connection protection, as well as overheating and short circuit protection features, ensuring reliable operation in various conditions. The high conversion efficiency averages around 88%, adapting to different input and output configurations seamlessly.

Easy to install, the module features accessible wiring terminals, eliminating the need for a soldering iron. Its dimensions of 6.1*3.4*12cm make it compact and suitable for various projects without taking up excessive space.

Whether you're powering DIY projects or managing complex electronic setups, the HKM-194451 Adjustable LM2596 DC-DC Step-Down Voltage Regulator Module is a reliable choice that blends functionality with ease of use. Upgrade your electronics toolkit today and experience the benefits this module has to offer.

Product information:
Module highlights:
1. Comfortable price, intelligent and humanized design, with high cost performance!
2. On-board voltmeter, voltmeter can be self-calibrated, there will never be the problem of inaccurate voltmeter!
Module performance and features:
With voltmeter display and voltmeter self-calibration. More advanced voltage microprocessor is adopted, voltmeter error ± 0.05V, range 0~40V. (To ensure the accuracy of voltmeter, please ensure that the input voltage is above 4.5V)
Touch button to switch the measurement input or output voltage, and there is an indicator light showing which voltage is being measured, and save the setting, even if the power is off and then turn on.
The voltmeter can be closed and can be easily achieved by touching button on the left when it is not needed.
With wiring terminal, it is convenient to use without soldering iron, and bonding wire wiring points are retained.
Input voltage 4.0~40V. (The input voltage must be more than 1.5V higher than the output voltage)
The adjustable output voltage range is continuously adjustable from 1.25V to 37v. (The input voltage must be 1.5V higher than the output voltage)
The output current is 3A. It is recommended to use it within 2.0A. The large current needs to enhance heat dissipation.
Output power 20W, more than 15W please strengthen heat dissipation.
High conversion efficiency, with an average of 88% (efficiency is related to input, output voltage, current and differential pressure)
With reverse connection protection, reverse connection does not burn
With overheating protection and short circuit protection functions
Size 6.1*3.4 * 12cm (length * width * height)