20w/40w/60w led driver Steady output voltage Long lifetime Overvoltage and overload protection 20w/40w/60w led driver Features1.With the design of high-efficient,low-loss ... to 50,000 hours.4.High power factor,more than 0.95.5.The work efficiency is more than 95%.6 ... .8.Transportation and storage environment,respectively,at the temperature of 0°C—70°C and 0°C—95°C. 20w/40w/60w led driver