Features:-Safety features: automatic overload shutdown, overvoltage shutdown, automatic thermal shutdown, short circuit protection.-Voltage consistency: there are no significant voltage fluctuations when switching on, during transmission, receiving or when switching off.-No fan in the case, quiet operation. Metal shell with many holes makes heat dissipation more efficient.-Ideal for LED strips, 3D printers, ham radio transceivers, CCTV cameras, car subwoofer amplifiers, audio amplifiers, wireless routers, ADSL cats, HUB, audio/video power supplies. Use indoors only.-The output voltage is adjustable by 10%. Three sets of output channels.Specification:Size: 20*11*5cmShell Material: aluminumInput voltage: AC 110V / 220V ±15%Input frequency: 50/60HzOutput.