--- product_id: 456578558 title: "EC Buying Mini Step-Down Power Supply" brand: "ec buying" price: "€ 18.83" currency: EUR in_stock: true reviews_count: 8 category: "Ec Buying" url: https://www.desertcart.sk/products/456578558-ec-buying-mini-step-down-power-supply store_origin: SK region: Slovakia --- # 3W ultra-efficient power output Wide 90-245VAC input range UL & CE certified safety isolation EC Buying Mini Step-Down Power Supply **Brand:** ec buying **Price:** € 18.83 **Availability:** ✅ In Stock ## Summary > ⚡ Power your smart home with precision and peace of mind! ## Quick Answers - **What is this?** EC Buying Mini Step-Down Power Supply by ec buying - **How much does it cost?** € 18.83 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/456578558-ec-buying-mini-step-down-power-supply) ## Best For - ec buying enthusiasts ## Why This Product - Trusted ec buying brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Triple Pack Value:** Three modules included to power multiple devices or projects with ease. - • **Compact Powerhouse:** Miniature size fits seamlessly into smart home setups without clutter. - • **Built-In Safety Shield:** UL & CE certified isolation with short-circuit and over-current self-recovery. - • **Whisper-Quiet Efficiency:** Low ripple and noise ensure silent operation for professional environments. - • **Global Voltage Compatibility:** Supports full 90-245VAC input for worldwide use—no adapter worries. ## Overview The EC Buying HLK-PM01 is a compact, high-efficiency 3W AC-DC isolated power module designed for smart home and automation applications. It supports a wide input voltage range (90-245VAC), delivers stable 5V DC output with low ripple and noise, and meets UL and CE safety certifications. This triple-pack module offers reliable short-circuit and over-current protection, making it an ideal choice for professional-grade home automation and electronic projects. ## Description Product description EC Buying AC-DC Isolated Power Module AC-DC isolated power module: with good output short-circuit and over-current protection and self-recovery, high efficiency and high power density. HLK-PM24 AC-DC isolated power module Output characteristics: (24V/125mA) No-load rated output voltage: 24±0.1 VdcF ull load rated output voltage: 24±0.2 VdcS hort-time maximum output current: ≥220 mA Rated output current: 125 mAV oltage regulation rate: ± 0.2 % Load Regulation: ± 0.5 % Input low voltage efficiency: Vin=115Vac, output full load ≥73% Input high voltage efficiency: Vin=230Vac, output full load ≥73 %O utput ripple and noise (MVP-p): ≤150 mVR ated input voltage, output full load. Use a 20MHz bandwidth oscilloscope to test with 10uF and 0.1uF capacitors at the load end. HLK-PM12 AC-DC isolated power module Output characteristics: (12V/250mA) No-load rated output voltage: 12±0.1 Vdc Full load rated output voltage: 12±0.2 Vdc Short-time maximum output current: ≥350 mA Rated output current: 250 mA Voltage regulation rate: ± 0.2 % Input high voltage efficiency: Vin=230Vac, output full load ≥73 % Output ripple and noise (MVP-p): ≤120 mV Rated input voltage, output full load. Use a 20MHz bandwidth oscilloscope to test with 10uF and 0.1uF capacitors at the load end. HLK-PM03 AC-DC isolated power module Output characteristics: (3.3V/1000mA) No-load rated output voltage: 3.3±0.1 VdcF ull load rated output voltage: 3.3±0.2 VdcS hort-time maximum output current: ≥1100 mAR ated output current: 1000 mAV oltage regulation rate: ± 0.2 %L oad Regulation: ± 0.5 %I nput low voltage efficiency: Vin=115Vac, output full load ≥72%I nput high voltage efficiency: Vin=230Vac, output full load ≥72%O utput ripple and noise (MVP-p): ≤100 mVT he rated input voltage is output full load. Use a 20MHz bandwidth oscilloscope to test with 10uF and 0.1uF capacitors at the load end. HLK-PM01 AC-DC isolated power module Output characteristics: (5V/600mA) No-load rated output voltage: 5±0.1 VdcF ull load rated output voltage: 5±0.2 Vdc Short-time maximum output current: ≥700 mAR ated output current: 600mAV Load Regulation: ± 0.5 %I nput low voltage efficiency: Vin=115Vac, output full load ≥73%I nput high voltage efficiency: Vin=230Vac, output full load ≥73 %O Environmental conditions Review: Good - Do the job. I have bounced the power on mine many time and no issue. Constant voltage and well packaged me. Review: Good little power supply - Good product for the price, really. Not an instant supply when turned on, takes about a second and slow drain when off if that is an issue for your project. Someone here says is not breadboard friendly. It is, with a small modification. The supply rail of the breadboard is most likely continuous supply of power along the breadboard. You only have to snip the track underneath the bridges like sections on one end of the breadboard the mini power supply will fit perfectly sideways with the dc prongs on each side of the bridge ## Features - ✔HLK-PM01:Hi-Link latest power supply module, suitable for smart home switch control device, small volume, low current, input voltage range, is the best choice of smart home. - ✔AC-DC isolated power module: meet UL, CE requirements, ultra-thin, ultra-small; full voltage input (90～245Vac); low ripple, low noise; product design meets EMC and safety test requirements; low power consumption, environmental protection , no-load loss <0.1W; 100% load aging and testing - ✔HLK-PM01: 3W ultra-small series module power supply is a small volume, high-efficiency module power supply. It has the advantages of global input voltage range, low temperature rise, low power consumption, high efficiency, high reliability, and high safety isolation. Has been widely used in smart home, automation control, communication equipment, instrumentation and other industries. - ✔AC-DC isolated power module: has good output short-circuit and over-current protection and self-recovery, high efficiency and high power density. - ✔Pacakge include :3pcs power module.(AC-DC Isolated Power Module) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09Z253MQ2 | | Best Sellers Rank | #102,896 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #382 in Power Converters | | Brand | EC Buying | | Brand Name | EC Buying | | Current Rating | 0.2 Amps | | Customer Reviews | 4.5 out of 5 stars 70 Reviews | | Item Weight | 0.7 Ounces | | Manufacturer | EC Buying | | Model | HLK-PM01 | | Mounting Type | PCB Mount | | Part Number | HLK-PM01 | | Power Source | Ac/Dc | | Specification Met | CE, UL | | Unit Count | 3.0 Count | | Warranty Description | NO | ## Product Details - **Brand:** EC Buying - **Current Rating:** 0.2 Amps - **Mounting Type:** PCB Mount - **Power Source:** Ac/Dc - **Specification Met:** CE, UL ## Images ![EC Buying Mini Step-Down Power Supply - Image 1](https://m.media-amazon.com/images/I/61t8PlpBkJL.jpg) ![EC Buying Mini Step-Down Power Supply - Image 2](https://m.media-amazon.com/images/I/71atrpokqPL.jpg) ![EC Buying Mini Step-Down Power Supply - Image 3](https://m.media-amazon.com/images/I/6159jK++6eL.jpg) ![EC Buying Mini Step-Down Power Supply - Image 4](https://m.media-amazon.com/images/I/71Nn-sAKN9L.jpg) ![EC Buying Mini Step-Down Power Supply - Image 5](https://m.media-amazon.com/images/I/51vgvuVLYCL.jpg) ## Questions & Answers **Q: are the pins spaced correctly for thru hole pcb? thanks** A: If you mean the standard 2.54mm distance between holes: Yes they are. **Q: Is input 110-220vac for the 3vdc output version?** A: All these modules have an input voltage between 90-264V. **Q: What method do you use to affix a wire to the pins? Seems scary to use the 24g broadboard style jumper wire on them for 120v AC** A: Those wires work fine. Not enough current going through it to need anything bigger ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good *by S***N on May 13, 2026* Do the job. I have bounced the power on mine many time and no issue. Constant voltage and well packaged me. ### ⭐⭐⭐⭐⭐ Good little power supply *by S***N on November 2, 2025* Good product for the price, really. Not an instant supply when turned on, takes about a second and slow drain when off if that is an issue for your project. Someone here says is not breadboard friendly. It is, with a small modification. The supply rail of the breadboard is most likely continuous supply of power along the breadboard. You only have to snip the track underneath the bridges like sections on one end of the breadboard the mini power supply will fit perfectly sideways with the dc prongs on each side of the bridge ### ⭐⭐⭐⭐⭐ Great product at an amazing price.. *by R***H on February 9, 2026* Fantastic ## Frequently Bought Together - EC Buying Mini Step-Down Power Supply, Intelligent Home Switching DC Power Module AC DC Isolated Power Module 220v to 5v, HLK PM01 AC DC Converter 220V to 5V（3PCS） - Acxico 5Pcs 5V 700mA Board Module Mini AC-DC 110V 120V 220V 230V to 5V 12V Converter Board Module Power Supply - AEDIKO 4pcs DC 5V Relay Module - 1 Channel Relay Switch Board with Optocoupler Isolation, 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.sk/products/456578558-ec-buying-mini-step-down-power-supply](https://www.desertcart.sk/products/456578558-ec-buying-mini-step-down-power-supply) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-05-19*