--- product_id: 149705426 title: "2 Pack LM2596 DC to DC Voltage Regulator 4-40V to 1.5-35V Buck Converter with LED Display" brand: "valefod" price: "108 zł" currency: PLN in_stock: true reviews_count: 8 category: "Valefod" url: https://www.desertcart.pl/products/149705426-2-pack-lm2596-dc-to-dc-voltage-regulator-4-40v store_origin: PL region: Poland --- # 3A max output current Adjustable 1.5-35V output voltage Input range 4-40V DC 2 Pack LM2596 DC to DC Voltage Regulator 4-40V to 1.5-35V Buck Converter with LED Display **Brand:** valefod **Price:** 108 zł **Availability:** ✅ In Stock ## Summary > ⚡ Power your projects with precision and style — never settle for less! ## Quick Answers - **What is this?** 2 Pack LM2596 DC to DC Voltage Regulator 4-40V to 1.5-35V Buck Converter with LED Display by valefod - **How much does it cost?** 108 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/149705426-2-pack-lm2596-dc-to-dc-voltage-regulator-4-40v) ## Best For - valefod enthusiasts ## Why This Product - Trusted valefod brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safe & Efficient:** 92% conversion efficiency with built-in short circuit and over-temperature protection keeps your projects running cool and safe. - • **Robust & Reliable:** Built on thick 36μm circuit boards with high-Q inductors and solid-state capacitors to minimize noise and maximize stability. - • **Smart LED Display:** Integrated digital voltmeter with input/output toggle lets you monitor voltage in real-time—ditch the multimeter hassle. - • **Compact Powerhouse:** Miniature 57x36x13mm size fits seamlessly into any project without bulk, perfect for modern workspace setups. - • **Precision Power Control:** Fine-tune voltage from 1.5V to 35V with a smooth potentiometer dial for ultimate DIY customization. ## Overview This 2-pack LM2596 DC-DC buck converter set offers adjustable output voltage from 1.5V to 35V with a max current of 3A, featuring a high-efficiency 92% conversion rate, real-time LED voltage display, and robust circuit design. Ideal for professional DIY electronics, it ensures noise-free, stable power delivery in a compact form factor, complete with safety protections and easy calibration. ## Description Features: - DC-DC converter module - Thickened circuit boards - Advanced solid-state capacitor - Short circuit and over-temperature protection - 100% tested, sealed in anti-static packaging Kindly Note: 1. Input voltage must be 1.5 V higher than the output voltage, no boost 2. Do not reverse the input and output interface 3. Keep output under 2A (or 15W), and use a heat sink when for a long time working4. The factory settings stay a high voltage, you may need to contrarotate the screw on blue potentiometer about 7-15 circles before the output voltage changes How to Calibrate the Digital Tube Voltmeter (Optional steps for the person who need a highly accurate voltage value) 1. Short press the left "ON/OFF" button to start up the digital tube voltmeter. Long press(>1s, 4 seconds) the left button to enter self-calibration of voltage measurement(calibration range: -0.5-0.5V, factory setting is 0.0). "IN" indicator lights = input voltage measurement calibration starts. Then, long press(>2 seconds) the right "Mode" button, "OUT" indicator lights = output voltage measurement calibration starts. Tap the left / right button to reduce / rise by one unit (since the voltage value of one unit is less than 0.1V, you need to 1-5 times tap the button continuously, so that the voltmeter can change by 0.1V)3. After calibration, long press(>2 seconds) the right "Mode" button to preserve the adjusted value(no loss with outage) and back to normal voltage display. Specifications: - Model: LM2596/Digital Tube Voltmeter - Input voltage: DC 4V - 40V - Output Voltage: DC 1.5V - 35V (adjustable) - Output Current: 3A (max.) - Conversion Efficiency: 92% (max.) - Switching Frequency : 150KHz - Operating Temperature: -45℃ to +85℃ - Size(L x W x H): 57*36*13mm - Weight: 21g Package List: 2x DC-DC Buck Converter Module with LED Display Review: good product - Good product, doing what should. Review: Easy to use great for DIY projects. - Absolutely brilliant. You’ll need to turn anti clockwise to drop power, it takes a lot of turns, like 15-20 before you see anything happen. The led display works great just click the input/output buttons to switch the display, no voltmeter needed. ## Features - 【High Precision】The buck converter consists of 36u thickened circuit boards, high-Q inductance with output LED indicator, and superior solid-state capacitors that can effectively filter out high frequency noise. Suitable for various electronic projects. - 【Input Voltage】DC 4V to 40V (input voltage must be 1.5V higher than the output voltage, no boost). - 【Output Voltage】DC 1.5V to 35V voltage is continuously adjustable, maximum output current is 3A. - 【Mini Size】57*36*13 mm (with potentiometer). 2pcs included. - 【Easy to DIY】Connect to power source, using a mini screwdriver to increase or decrease output voltage by adjusting the screw on the blue potentiometer and monitor voltage with multimeter to get the needed voltage, clockwise to increase voltage and counterclockwise to decrease voltage. (Factory default stays a high voltage, you need to contrarotate about 7-15 circles before the voltage starts ramping down, 1 circle means +/- 1V) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07VMLMLFN | | Best Sellers Rank | 12,565 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 149 in Semiconductor Products | | Brand | Valefod | | Current Rating | 3 Amps | | Customer Reviews | 4.4 4.4 out of 5 stars (128) | | Item Dimensions D x W x H | 57D x 36W x 13H millimetres | | Item Weight | 0.07 Kilograms | | Manufacturer | Valefod | | Manufacturer Part Number | VA-139-152 | | Minimum Frequency | 50 Hz | | Model Number | LM2596 | | Mounting Type | PCB Mount | | Power Source | DC | | UPC | 793118393088 | | Unit Count | 2.0 count | ## Product Details - **Brand:** Valefod - **Current rating:** 3 Amps - **Mounting type:** PCB Mount - **Power source:** DC - **Product dimensions:** 57D x 36W x 13H millimetres ## Images ![2 Pack LM2596 DC to DC Voltage Regulator 4-40V to 1.5-35V Buck Converter with LED Display - Image 1](https://m.media-amazon.com/images/I/71JxIVMbubL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ good product *by M***O on 8 October 2024* Good product, doing what should. ### ⭐⭐⭐⭐⭐ Easy to use great for DIY projects. *by P***T on 29 October 2025* Absolutely brilliant. You’ll need to turn anti clockwise to drop power, it takes a lot of turns, like 15-20 before you see anything happen. The led display works great just click the input/output buttons to switch the display, no voltmeter needed. ### ⭐⭐⭐⭐ Works well, good price, terrible instructions *by D***K on 18 December 2024* Works well, good price, terrible instructions! I had to read the instructions over and over again but by a process of elimination figured it out. 1) Connect any DC power supply up to 40v into the left in+ connector. 2) You switch on the device by pressing the left little black button (on the input side IN+). It will then show you the input voltage on the digital display assuming the red light is showing on the left. 3) Then if you press the right button, it will show you the output voltage. If you press the right button again, you will see the input voltage again, and vice versa. 4) Go back to the output voltage, to adjust it. 5) Hold down the right (output OUT-) button until the display starts to flash. Then if you press the right button (while the display is still flashing) the output voltage will increase by one tenth of a volt each time you press the button. Or if you press the left button (while the display is still flashing) the voltage will go down by one tenth of a volt each time you press the button. 6) Then hold down the right button for a few seconds, and the display will stop flashing, and lock the output. 7) Then if you press the right button, it will show you the output voltage, then press it again to show the input voltage on the left. Each time you press it, it show the other voltage. The instructions picture indicates that turning the tiny brass screw will increase or decrease the output voltage. This does not seem to happen, it doesn't do anything, you adjust the output voltage as above. ## Frequently Bought Together - Valefod 2 Pack LM2596 DC to DC Voltage Regulator 4-40V to 1.5-35V Buck Converter with LED Display - [2 Pack] DC-DC 5A Buck Converter 4-38V to 1.25-36V Voltage Regulator High Power Module with LED Display --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/149705426-2-pack-lm2596-dc-to-dc-voltage-regulator-4-40v](https://www.desertcart.pl/products/149705426-2-pack-lm2596-dc-to-dc-voltage-regulator-4-40v) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-01*