... in a car 3.full protection 300w Car Power converter,1.FeaturesRate Power: 300wPeak Power: 500wAC Output Voltage: 110VAC,220VAC,240VAC DC ... Wave Frequency: 60Hz/50HzEfficiency:≥ 88% Working temperature: 0oC to 40oC Gross Weight(Packing): 480g Dimension: 114*68*35mm Function ... traffic lights; etc. 2) industrial equipment series: solar, wind power and metal-halide lamp, etc. 3) office: computer, printer, ...