This Power Supply is a Regulated Center Positive Power Supply Has a Compact Size & Light Weight. Regulated Stable Voltage. Good Quality SMPS Based Adapter Power LED Monitor (LED Glow When in Use) Stabilized Output, Low Ripple & Low Interference High Efficiency & Low Energy Consumption.Stabilized Output, low ripple & low interference Ideal for CCTV Cameras / Routers / Modems / Cordless Phones / Set Top Boxes / Wireless Devices / POS Machines etc.