This switch power supply convert AC to DC, widely used in the power adapter, Led lights strip, LED display, billboard, industrial equipment, etc. Features: Switch power supply, convert AC 110V/220V to DC 48V . Dual input voltage: AC 110V/220V. There is a switch, choose the proper voltage before use. Steady and precise output voltage. Short circuit protection, overload protection(105%150%), over voltage protection(115%135%). Widely used as the power adapter for Led strip, LED display, billboard, industrial equipment, etc. IN-DOOR USE ONLY! Specifications: Material: Metal case Input voltage: AC110/220V 15% Input Frequency: 50/60Hz Input surge: Cold start 25A@115V AC 50A@230V AC Output voltage: DC 48V Output voltage adjustment range: 10% Output current: 8.3A Current Range: 08.3A Output power: 400W Working temperature: -40~65 degree Celsius Storage Temperature: -20C - +60C Humidity: 20%~90%RH Non-Condensation Item size: 21.4 * 11.3 * 4.8cm / 7.9 * 3.9 * 1.9in Item weight: 704g / 1.55lb Package size: 22.0 * 11.7 * 5.2cm / 8.7 * 4.6 * 2.0in Package weight: 748g / 1.65lb Package List: 1 * Voltage Transformer