The RS-15-12 is a 15W single-output enclosed switching power supply from MEAN WELL, part of the compact RS series designed for low-power general-purpose applications requiring a small, economical 12V DC source. It accepts a universal AC input of 85V to 264V AC (47Hz to 63Hz), covering all global mains standards without a voltage selection switch — a notable advantage at this low power level, where many competing supplies require manual voltage switching. The output delivers a regulated 12V DC at up to 1.3A continuous current (15.6W), with output voltage adjustable via an onboard potentiometer for system-level calibration. The RS-15 series is MEAN WELL's most compact enclosed power supply platform, featuring a miniature plastic housing that is ideal for integration into small equipment and space-constrained installations. Despite its small size, it incorporates comprehensive protection functions including short circuit (constant current limiting with auto-recovery), overload, overvoltage, and over-temperature protection, ensuring reliable operation under fault conditions. The unit achieves good efficiency for its power class, minimizing heat generation, and operates over a wide temperature range with derating, suiting both indoor and semi-outdoor environments. It is certified to relevant international safety standards including UL60950-1 and TUV EN60950-1, with EMC compliance meeting Class B emissions and industrial immunity requirements, ensuring it does not interfere with sensitive equipment and withstands electrical noise in various environments. The compact enclosure measures approximately 85mm × 58mm × 32mm (L×W×H) and can be chassis-mounted with screw tabs or installed in tight equipment compartments. Typical applications include 12V power for small industrial controllers, sensors and transducers, LED lighting and indicators, IoT and smart home devices, consumer electronics, test and measurement peripherals, security cameras and access control modules, small appliances, and any low-power application requiring a compact, universal-input 12V supply. The RS-15-12 represents MEAN WELL's entry-level enclosed power supply, delivering proven reliability, universal input, and comprehensive protection in a miniature, cost-effective package. It is an ideal choice when a small, dedicated 12V rail is needed without the overhead of a larger power supply, and its global certification portfolio ensures compliance across international markets.