Dual switchable input voltage: AC 110V/220V. Wide input voltage range, stable and accurate output voltage. Protection: short circuit, overload, over voltage CE and RoHS compliant safety, high efficiency and stable performance. < p>Widely used as power supply for LED strips, LED displays, indicators, industry, etc. Due to the common reactive power of LED lamps, transformers should always be selected around 30-40%! Normally the transformer always has 20% power loss. Please never exceed the maximum connected load. Suitable for most devices with DC 12V such as LED lights, LED strips not waterproof Circuit protection - overvoltage and short circuit LED indicator for switching on Energy efficiency class A + Working temperature and working humidity: -10°C to +60°C 20% to 90% RH Material: aluminum