... for a small order 2.support dropping shippment 3.custom/OEM logo is free 4.reliable Brand "LED ... carry.5. Input voltage, current, active power, power factor, Frequency, annual power consumption, DC-power, contrasteddisplaying 7 parameters on the meter green ... test the electric parameters are as follows: voltage, current, power, power factor, annual power consumption (10 hours /per day ) and frequency; ...