{"product_id":"12v-400ma-ac-dc-switching-power-supply-module-vertical-isolation","title":"12V 400mA AC-DC Isolated Switching Power Supply Module","description":"\n\u003ch2\u003e12V 400mA AC-DC Switching Power Supply Module – Vertical Isolation\u003c\/h2\u003e\n\u003cp\u003ePower your electronics projects with confidence using this compact \u003cstrong\u003e12V 400mA AC-DC Switching Power Supply Module\u003c\/strong\u003e. Featuring vertical board orientation and full AC-to-DC isolation, this module efficiently converts 220V AC mains input down to a stable 12V DC output — making it an ideal embedded power solution for DIY electronics, automation systems, smart home devices, and more.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e 12V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Current:\u003c\/strong\u003e 400mA (max)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e AC 85–265V wide range (compatible with 110V and 220V mains)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTopology:\u003c\/strong\u003e Isolated switching power supply — keeps your low-voltage DC circuit safely separated from the high-voltage AC mains\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVertical PCB Mounting:\u003c\/strong\u003e Space-saving upright board design, ideal for compact enclosures and tight builds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Conversion Efficiency:\u003c\/strong\u003e Low heat generation thanks to modern switching technology\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e Easy to integrate into custom enclosures, PCBs, or breadboard setups\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Application:\u003c\/strong\u003e Suitable for Arduino projects, sensor modules, LED drivers, relay boards, IoT devices, and more\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose an Isolated Switching Module?\u003c\/h3\u003e\n\u003cp\u003eUnlike non-isolated converters, this module uses transformer-based galvanic isolation between the AC input and DC output. This is a critical safety feature when your project interfaces with other electronics or requires a clean, noise-free power supply. The switching design also delivers much better efficiency compared to linear regulators, keeping your builds cooler and more energy-efficient.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × 12V 400mA AC-DC Switching Power Supply Module (Vertical Isolation)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Projects \u0026amp; Use Cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSmart home automation controllers\u003c\/li\u003e\n  \u003cli\u003eLED strip or module power supplies\u003c\/li\u003e\n  \u003cli\u003eArduino \/ microcontroller power input\u003c\/li\u003e\n  \u003cli\u003eRelay \u0026amp; solenoid driver boards\u003c\/li\u003e\n  \u003cli\u003eIoT gateway \u0026amp; sensor nodes\u003c\/li\u003e\n  \u003cli\u003eIndustrial control panel auxiliary power\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cp\u003eExplore more components to complete your electronics project:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/esp32-s3-core-board-n8r2-compatible-with-devkitc-1-esp32s3-splitter-board\"\u003eESP32-S3 Core Board N8R2 Compatible with DevKitC-1 – ESP32S3 Splitter Board\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/5s5-series-battery-charging-protection-board-18v21v-20a-lithium-ion-battery-pack-protection-circuit-board-bms-module\"\u003e5S5 Series Battery Charging Protection Board 18V\/21V 20A – BMS Module\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does the 12V 400mA AC-DC Switching Power Supply Module do?\u003c\/h4\u003e\n\u003cp\u003eA: This module converts AC mains power (85–265V AC) into a stable 12V DC output at up to 400mA. It's designed for embedding directly into electronics projects, automation systems, or custom enclosures that require a reliable, isolated DC power source.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What does \"vertical isolation\" mean on this power supply module?\u003c\/h4\u003e\n\u003cp\u003eA: \"Vertical\" refers to the upright PCB mounting orientation, which saves horizontal space in compact enclosures. \"Isolation\" means the module uses galvanic isolation (via a transformer) between the high-voltage AC input and the low-voltage DC output, providing an important layer of electrical safety for your circuit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this module safe to use in DIY and hobbyist electronics projects?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — the isolated design ensures the DC output side is electrically separated from the mains AC input. However, as with any AC mains-connected component, it must be handled with appropriate care, installed in a suitable enclosure, and wired by someone with basic knowledge of electrical safety practices.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What kind of devices can I power with a 12V 400mA output?\u003c\/h4\u003e\n\u003cp\u003eA: This module is well-suited for powering microcontrollers (such as Arduino boards), relay modules, LED strips, sensors, IoT nodes, and other low-power 12V DC devices that draw up to 400mA (4.8W) of current.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the 12V 400mA AC-DC Switching Power Supply Module do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This module converts AC mains power (85–265V AC) into a stable 12V DC output at up to 400mA. 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