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Green PCB buck converter module with blue LED voltmeter display and screw terminals

BUCIER

BUCIER LM2596 DC-DC Buck Converter 4.0-40V to 1.25-37V 2A Power Adapter with LED Voltmeter

SKU CH-F7QT-ZD12P

A step-down buck converter module that adjusts 4.0-40V input down to 1.25-37V at up to 2A continuous current with a built-in LED voltmeter display

  • Type1PCS
  • Adjustable output 1.25-37V for versatile projects
  • Accepts wide 4.0-40V DC input range
  • Stable 2A operating current powers demanding loads
  • Integrated LED voltmeter shows real-time voltage
  • Terminal blocks enable quick solderless connections

Adjustable Buck Converter Module

The BUCIER LM2596 module steps down DC input from 4.0V to 40V to a continuously adjustable output between 1.25V and 37V. It suits hobbyists building DIY mobile power supplies, power monitoring rigs or communication equipment prototypes. An on-board LED voltmeter shows the input level when it is 4V or higher. Maximum output current reaches 3A while stable operation is rated at 2A.

Terminal Blocks And Screwdriver Adjustment

Connections use screw terminal blocks so soldering is optional. A mini screwdriver trims the output voltage via the onboard potentiometer. The input must stay at least 1.5V above the desired output for regulation to work. The voltmeter relies on an advanced microprocessor but only reads accurately when the input is 4V or more.

Check Your Source Voltage And Load

Verify that your DC source falls within the 4.0V to 40V window and can supply enough current for the target load. Ensure the source voltage exceeds the required output by at least 1.5V. Buyers needing more than 2A continuous current or an output above 37V should look elsewhere.

Highlights

  • Adjustable output 1.25-37V for versatile projects
  • Accepts wide 4.0-40V DC input range
  • Stable 2A operating current powers demanding loads
  • Integrated LED voltmeter shows real-time voltage
  • Terminal blocks enable quick solderless connections

Specifications

BrandSeloky
ModelSY071
Part NumberSY071
Type1PCS

Questions about this item

How can I confirm the BUCIER LM2596 buck converter is working correctly after wiring it up?

Apply an input voltage between 4.0 V and 40 V that is at least 1.5 V above your target output. The onboard LED voltmeter will show the output value; adjust the trimmer with a mini screwdriver until the display reads the desired voltage between 1.25 V and 37 V.

What comes in the package and is anything else required to use it?

The package contains one LM2596 step-down module with LED voltmeter and terminal blocks for solderless wiring. You must supply a DC source of 4.0–40 V and a load that draws no more than 2 A continuously.

Which capacity or version of this converter should I select for my application?

Only one version is offered: a single module rated for 2 A continuous output with a 4.0–40 V input range and 1.25–37 V adjustable output. Choose it if your load stays within 2 A and your input exceeds the desired output by at least 1.5 V.

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