--- product_id: 171294837 title: "Electronic Accessories 9V400mA 5W Constant Voltage Switch Power Supply Board Built-in Power Module Industrial Power Supply Buck Bare Board AC-DC (Size : 9V400mA)" brand: "smerod" price: "€ 32.29" currency: EUR in_stock: true category: "Home Garden" url: https://www.desertcart.gr/products/171294837-electronic-accessories-9v400ma-5w-constant-voltage-switch-power-supply-board store_origin: GR region: Greece --- # Electronic Accessories 9V400mA 5W Constant Voltage Switch Power Supply Board Built-in Power Module Industrial Power Supply Buck Bare Board AC-DC (Size : 9V400mA) **Brand:** smerod **Price:** € 32.29 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Electronic Accessories 9V400mA 5W Constant Voltage Switch Power Supply Board Built-in Power Module Industrial Power Supply Buck Bare Board AC-DC (Size : 9V400mA) by smerod - **How much does it cost?** € 32.29 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/171294837-electronic-accessories-9v400ma-5w-constant-voltage-switch-power-supply-board) ## Best For - smerod enthusiasts ## Why This Product - Trusted smerod brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Size:9V400mA Product Name: Power ModuleProduct model: AC / DC power supplyModulation method: pulse width modulation (PWM)Transistor connection method: single-ended[output characteristics]Output voltage: 9VRated current: 550mACurrent range: 0-600mARipple: <;100mVp - POutput accuracy: ±1%Voltage regulation rate: ±1%Load adjustment rate: ±1.2%Rated power: 1.95WFull load efficiency: 78%Establish, rise, hold time: 500 milliseconds, 80 milliseconds, 80 milliseconds / 220VAC[input characteristics]Input voltage range: 100-264VACInput current: <;0.2A (average current 0.06-0.12A)Frequency range: 47-63HzStart surge current: cold start <;30A / 230VACLeakage current: <;2 mA / 220VAC[Protection characteristics]Over-power protection: 150-170% rated power, automatic recoveryOvervoltage protection: VH1: > 50%【Environmental parameters】Working temperature and humidity: -15 ° C ~ + 50 ° C, @ 100% load, + 600 ° C @ 60% LOAD: 20% - 90% RHStorage temperature, humidity: -20 ° C ~ + 85 ° C, 10% -95% RH【safety standard】Withstand voltage: I / P-O / P: 1KVACInsulation resistance: I / P-O: 500VDC / 100M OhmsNote: As shown in the figure, this product only contains this product, other products are not included in the product.Delivery time: We usually deliver within 1-3 days, delivery time is 9-15 days.Note: Product size is for reference only, actual productSome color differences may be due to the angle of the product and the contrast of the light. ## Features - [Advantage 1] Wide range of input voltage range, suitable for various use environments, easy to use. - [Advantage 2] There are overload, short circuit, over temperature protection function, safe use, and more stable and reliable performance. - [Advantage 3] The output constant voltage mode has high voltage accuracy and is naturally cooled. - [Advantage 4] Full load aging test, durable, widely used in industrial power and equipment power. - [Advantage 5] Ultra-low output ripple, no worries about quality. ## Images ![Electronic Accessories 9V400mA 5W Constant Voltage Switch Power Supply Board Built-in Power Module Industrial Power Supply Buck Bare Board AC-DC (Size : 9V400mA) - Image 1](https://images-na.ssl-images-amazon.com/images/I/61451Srs-dL.jpg) ![Electronic Accessories 9V400mA 5W Constant Voltage Switch Power Supply Board Built-in Power Module Industrial Power Supply Buck Bare Board AC-DC (Size : 9V400mA) - Image 2](https://images-na.ssl-images-amazon.com/images/I/51CE36WIWnL.jpg) ![Electronic Accessories 9V400mA 5W Constant Voltage Switch Power Supply Board Built-in Power Module Industrial Power Supply Buck Bare Board AC-DC (Size : 9V400mA) - Image 3](https://images-na.ssl-images-amazon.com/images/I/51pUb7rISCL.jpg) ![Electronic Accessories 9V400mA 5W Constant Voltage Switch Power Supply Board Built-in Power Module Industrial Power Supply Buck Bare Board AC-DC (Size : 9V400mA) - Image 4](https://images-na.ssl-images-amazon.com/images/I/51EhLJd1GxL.jpg) ![Electronic Accessories 9V400mA 5W Constant Voltage Switch Power Supply Board Built-in Power Module Industrial Power Supply Buck Bare Board AC-DC (Size : 9V400mA) - Image 5](https://images-na.ssl-images-amazon.com/images/I/519EW%2BGz%2B0L.jpg) --- ## 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.gr/products/171294837-electronic-accessories-9v400ma-5w-constant-voltage-switch-power-supply-board](https://www.desertcart.gr/products/171294837-electronic-accessories-9v400ma-5w-constant-voltage-switch-power-supply-board) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-06-02*