20w/40w/60w led adapter Steady output voltage Long lifetime Overvoltage and ... high-efficient,low-loss and environmentally-friendly,the LED adapter has overvoltage and overload protection.2.The shell ... and steady output voltage,the servicing life is up to 50,000 hours.4.High power factor,more ... input power and supply fluctuations,respectively,90V to 246V and 47 HZ to 63 HZ.8.Transportation and storage ...