--- product_id: 87544130 title: "DollaTek Small DC Buck Voltage Converter Step Down Voltage Regulator Module Board 4-38V to 1.25-36V 5V/12V Adjustable Output Voltage Stabilizer Transformer" brand: "dollatek" price: "£6.61" currency: GBP in_stock: true category: "Dolla Tek" url: https://www.desertcart.co.uk/products/87544130-dollatek-small-dc-buck-voltage-converter-step-down-voltage-regulator store_origin: GB region: United Kingdom --- # 5A max output current Adjustable 1.25-36V output range Overheat & short-circuit protection DollaTek Small DC Buck Voltage Converter Step Down Voltage Regulator Module Board 4-38V to 1.25-36V 5V/12V Adjustable Output Voltage Stabilizer Transformer **Brand:** dollatek **Price:** £6.61 **Availability:** ✅ In Stock ## Summary > ⚡ Power your projects with precision and protection — don’t get left in the voltage dark! ## Quick Answers - **What is this?** DollaTek Small DC Buck Voltage Converter Step Down Voltage Regulator Module Board 4-38V to 1.25-36V 5V/12V Adjustable Output Voltage Stabilizer Transformer by dollatek - **How much does it cost?** £6.61 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/87544130-dollatek-small-dc-buck-voltage-converter-step-down-voltage-regulator) ## Best For - dollatek enthusiasts ## Why This Product - Trusted dollatek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Tool-Free Setup:** Convenient wiring terminals allow quick installation without soldering, perfect for rapid prototyping and on-the-go adjustments. - • **Smart Safety Features:** Built-in overheat and short-circuit protection safeguards your devices and workspace. - • **Robust 5A Power Delivery:** Supports up to 5A current with low ripple, ensuring stable and efficient performance for demanding projects. - • **Integrated Dual Voltmeter:** Instantly monitor input and output voltages with a switchable mini voltmeter and LED indicators—no extra tools needed. - • **Precision Voltage Control:** Fine-tune output voltage from 1.25V to 36V with a multi-turn potentiometer for exact power needs. ## Overview The DollaTek Small DC Buck Voltage Converter is a compact, high-efficiency step-down regulator module that converts 4-38V input to a finely adjustable 1.25-36V output at up to 5A. Featuring a built-in voltmeter, LED indicators, and robust safety protections, it’s designed for professionals and makers who demand precise voltage control and reliable performance in a compact form factor. ## Description Features:Input voltage: DC 4.0 ~ 38V Output voltage: DC 1.25V ~ 36V continuously adjustable ( the input voltage must be higher than the output voltage 1.5V ) Output current: max 5A, recommended for use in the 4.5A. Output power: up to 75W, more than 50W, Please enhance heat dissipation Voltmeter error: +/- 0.05V Measure range: 0 ~ 40V ( please ensure that the input voltage is 4.5V or more) Conversion efficiency: up to 96% Load regulation: S (I) ≤ 0.8% Voltage Regulation: S (u) ≤ 0.8% With overheat protection and short circuit protection Dimensions: 6.6 * 3.9 * 1.8cm Package include:1x DollaTek DC Step-down Module ## Features - With power supply green LED indicator and the mini voltmeter which can be calibrated by adjusting potentiometer - High power of 5A and low ripple; has heatsink and copper pillar; Over-heating/short-circuit protection allows safe usage - Press the switch button to choose testing input/output voltage; "IN"LED light when testing input voltage; "OUT" LED light when testing output voltage - Press the left-side button to turn ON/OFF voltmeter; Wiring terminals makes convenient usage even without soldering iron - Adjust the potentiometer in clockwise direction for output voltage increase and decreasing output voltage in counter-clockwise direction ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DK6WN63 | | Best Sellers Rank | 19,198 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 58 in Industrial Power Supply | | Brand | DollaTek | | Country Of Origin | China | | Current Rating | 5 Amps | | Customer Reviews | 3.9 3.9 out of 5 stars (273) | | Item Dimensions D x W x H | 18D x 39W x 18H millimetres | | Item Weight | 0.02 Kilograms | | Manufacturer | DollaTek | | Minimum Frequency | 50 Hz | | Model Number | 742548985240 | | Mounting Type | PCB Mount | | Power Source | DC Voltage Input | | Specification Met | ETL, FCC, UL | | UPC | 742548985240 | ## Product Details - **Brand:** DollaTek - **Current rating:** 5 Amps - **Mounting type:** PCB Mount - **Power source:** DC Voltage Input - **Product dimensions:** 18D x 39W x 18H millimetres ## Images ![DollaTek Small DC Buck Voltage Converter Step Down Voltage Regulator Module Board 4-38V to 1.25-36V 5V/12V Adjustable Output Voltage Stabilizer Transformer - Image 1](https://m.media-amazon.com/images/I/71b18vXk3rL.jpg) ## Frequently Bought Together - DollaTek Small DC Buck Voltage Converter Step Down Voltage Regulator Module Board 4-38V to 1.25-36V 5V/12V Adjustable Output Voltage Stabilizer Transformer - Yizhet 10 Pack Buck Converter DC to DC, High Efficiency Voltage Regulator, 3.0-40V to 1.5-35V, Adjustable Power Supply Module - AEDIKO 4pcs Relay Module DC 5V 1 Channel Relay Board with Optocoupler Isolation Support High or Low Level Trigger --- ## 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.co.uk/products/87544130-dollatek-small-dc-buck-voltage-converter-step-down-voltage-regulator](https://www.desertcart.co.uk/products/87544130-dollatek-small-dc-buck-voltage-converter-step-down-voltage-regulator) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-25*