... °C, 5% -95% RH; 7). Cooling mode: natural cooling; 8). Energy efficiency accordingly: ERP/ CEC-V standard; 9). Safety standards: IEC/EN ... chip is design by Leadtrand/SLS/Ang Bao plans( high efficiency,with Overvoltage Protection, Stable Working when input Full Voltage.Standard ... Transfomer:PQ Style, Full Output,Low Termperature,high efficiency Welcome you join us! Factory Tour 10 W 5V ...