AC-DC single-output switching power supply (often used as a centralized CCTV or LED strip power supply) packaged in a blue box with a perforated metallic casing and cooling : Accepts 100–240V AC input and converts it to a regulated DC voltage Protections: Includes built-in short circuit, over-current, and over-voltage protection features.Application: Designed to power multiple security cameras or continuous low-voltage lighting arrays safely