... ac adapter 1,High efficiency:90% 2.Sine wave output 3.Total Harmonic Distortion:Less or just 4% 4.CE,RoHS wind turbine ac ... battery, over load , short circuit, over temperature, pole-confusion protection for storage batteryOperation Ambient Temperature -10~50°COperation Altitude <4000mOperation Ambient ... (W×H×D)mm 470×280×240Weight(KG) 11 For more information, please feel free to contact us.