{"product_id":"ac-power-adapter-12v-dc-2a-5-5x2-1mm-barrel-universal-100-240v","title":"AC Power Adapter 12V DC 2A — 5.5×2.1mm Barrel, Universal 100–240V AC Input, Right-Angle Plug","description":"\u003ch2\u003eAC Power Adapter — 12V DC \/ 2A, Universal Input, 5.5×2.1mm Barrel Plug\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e12V DC 2A AC power adapter\u003c\/strong\u003e is the standard power supply for LED strips, relay boards, motor drivers, CCTV cameras, and any project requiring a 12V DC supply at up to 2A. With a universal \u003cstrong\u003e100–240V AC input\u003c\/strong\u003e, it works worldwide without voltage adapters. The \u003cstrong\u003eright-angle slim housing\u003c\/strong\u003e mounts parallel to the wall outlet or power strip, saving adjacent outlet space. The standard \u003cstrong\u003e5.5×2.1mm center-positive barrel plug\u003c\/strong\u003e connects directly to the vast majority of 12V electronics modules and development boards.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100–240V AC, 50\/60Hz (universal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage (nominal)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage (measured)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12.4V no load → 12.2V @ 1A → 11.7V @ 2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current (max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2A continuous (recommended: ≤1.5A for best stability)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Ripple\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150–350mV (varies with load; best below 1.5A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDC Plug\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.5mm O.D. × 2.1mm I.D. barrel (center positive)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~97cm (38″)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRight-angle slim, saves outlet space\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePerformance Notes\u003c\/h3\u003e\n\u003cp\u003eOutput regulation is good across the load range — voltage stays within 5% of nominal from no-load to 2A. Output ripple is 150mV at light loads, rising to ~250mV at 1.5A and ~350mV at full 2A load. \u003cstrong\u003eFor best performance, keep load at or below 1.5A\u003c\/strong\u003e — the adapter runs cooler and ripple remains lower. For projects requiring only 5V or 3.3V via a linear regulator, the \u003cstrong\u003e7.5V 1A adapter\u003c\/strong\u003e is a better choice as it minimizes regulator heat dissipation.\u003c\/p\u003e\n\n\u003ch3\u003e12V vs 7.5V Adapter — Which to Choose?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e7.5V 1A adapter:\u003c\/strong\u003e Best for Arduino boards, breadboard power supply modules, and linear regulator projects (3.3V–6V output) — minimizes heat in onboard regulators\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12V 2A adapter (this):\u003c\/strong\u003e Best for LED strips (WS2812B, 5050), relay boards, stepper motor drivers (A4988, DRV8825), CCTV cameras, solenoid valves, and any load requiring 12V directly or higher current\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED strip power supply\u003c\/strong\u003e — WS2812B, 5050 RGB, and single-color LED strips (12V type)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay board power supply\u003c\/strong\u003e — 12V relay coil supply for 4\/8\/16-channel relay modules\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStepper motor driver supply\u003c\/strong\u003e — A4988, DRV8825, TMC2208 motor power rail (12V)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCCTV and IP camera power\u003c\/strong\u003e — standard 12V DC power for security cameras\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolenoid valve and actuator supply\u003c\/strong\u003e — 12V solenoid coil power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC-DC converter input\u003c\/strong\u003e — 12V input for buck converters (LM2596, XL4016) stepping down to 5V\/3.3V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronics lab bench supply\u003c\/strong\u003e — general-purpose 12V \/ 2A regulated DC source\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3D printer heated bed and hotend power\u003c\/strong\u003e — 12V supply for RepRap-style printers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e5.5×2.1mm center-positive barrel plug\u003c\/strong\u003e is the universal DC power connector standard, compatible with Arduino Uno\/Mega DC jacks, most relay modules, LED strip controllers, DC-DC converter modules, CCTV cameras, and the vast majority of 12V electronics worldwide.\u003c\/p\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × AC Power Adapter 12V DC \/ 2A (5.5×2.1mm barrel, right-angle plug, ~97cm cable)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":45680428712171,"sku":"","price":12.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/AC-Adapter-12V-2A-Slim-1.jpg?v=1723006459","url":"https:\/\/keszoox.com\/products\/ac-power-adapter-12v-dc-2a-5-5x2-1mm-barrel-universal-100-240v","provider":"Keszoox","version":"1.0","type":"link"}